幾何
三角形、円、座標幾何、証明問題。
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the diameter of a circle is 56.4 meters. what is the circles area? roun…
2508.03 square meters
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the radius of a circle is 13 meters. what is the circles area? round yo…
530.93 square meters
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using the graph to the left, answer the following questions: 21) what i…
21) $\boldsymbol{\langle 6, 4 angle}$ 22) $\boldsymbol{\vec{d}}$ 23) $\boldsymbol{\langle -10, -2 angle}$
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in $\triangle cde$, $u$ is the centroid, $uk = 12$, $em = 21$, and $ud …
27
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the diameter of a circle is 38 millimeters. what is the circles area? r…
1134.11 square millimeters
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7. find br if d is the circumcenter of $\triangle abc$, $cd = 11.1$, an…
Problem 7: \(16.3\) Problem 8: \(7.80\)
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the radius of a circle is 2 meters. what is the circles area? round you…
12.57 square meters
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the diameter of a circle is 32 kilometers. what is the circles area? ro…
804.25 square kilometers
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name6.1 - perpendicular bisectors · spiral reviewfind the measure of ea…
7. $BR \approx 9.8$ 8. $FL \approx 4.25$
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the radius of a circle is 11 millimeters. what is the circles area? rou…
379.94 square millimeters
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the ratio that determines how much a figure is enlarged or reduced duri…
1. scale factor 2. congruent (or the same) 3. reduce 4. smaller (or scaled-down) 5. enlarge (or magnify)
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taking guided notes is an excellent way to stay focused during lessons.…
1. A geometric transformation that changes the size of a figure while keeping its shape and orientation is called **dilation** 2. The fixed point in a plane from which all points …
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1. if a small garden plot measures 4 feet by 6 feet and is scaled up by…
1. d. 10 feet by 15 feet 2. b. 6 cm, 8 cm, 10 cm
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which rule explains why these triangles are similar? sss sas aa none of…
none of the above; the triangles cannot be proven similar
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q3 - mathematics gr 8 - section 1 | lesson: modeling similar figures in…
1. c. 2.5 inches by 4 inches 2. b. Scale factor 3. d. Angles are the same, and sides are proportional 4. c. 4
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which rule explains why these triangles are similar?ssssasaanone of the…
none of the above; the triangles cannot be proven similar
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10. a rectangle has vertices at (1,2), (3,2), (3,4), and (1,4). what ar…
b. (-2,1)
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1. a poster is 4 inches by 6 inches and is enlarged to 12 inches by 18 …
1. d. 3 2. c. $\frac{1}{50}$ 3. a. Angles 4. d. To ensure that parts of different sizes fit together accurately
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1 unit area = □ square units
24
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9. using the distance formula, what is the length of ab? c = (-6, 6) a …
d. 4.24
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which of the following shows the correct use of function notation for t…
A. $f(2)$ means replace the variable with the number 2 and simplify; the result is $f(2)=3(2)+5=11$
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1. ______ figures have the same shape but may differ in size. 2. the __…
1. Similar 2. axes (x-axis and y-axis) 3. transformed
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question 4 1 pts solve. round answers to the nearest tenth when necessa…
$75.5$
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a ________ resizes a figure by a scale factor, making it larger or smal…
1. A **dilation** resizes a figure by a scale factor, making it larger or smaller while maintaining its shape. 2. The number used to multiply the dimensions of a figure to enlarge…
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for each pair of figures below, choose how they are related.1.□ transla…
1. 正确选项：Translation 2. 正确选项：Reflection 3. 正确选项：Rotation 4. 正确选项：Translation
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lesson 27 understanding the four-quadrant coordinate plane > for proble…
1. $A(-3,-2)$: Quadrant III 2. $B(4,-4)$: Quadrant IV 3. $C(2,3)$: Quadrant I 4. $D(-2,4)$: Quadrant II 5. $E(3,-3)$: Quadrant IV 6. $F(4,0)$: $x$-axis 7. Reflected $E$: $(3, 3)$;…
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1. identify the transformation between the two triangles:○ translation○…
1. None of these 2. Reflection 3. Rotation 4. Rotation
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choose how they are related.1.○ translation○ reflection○ rotation○ none…
1. Translation 2. Reflection 3. Translation 4. Rotation
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9. write and solve an equation to find $m\\angle7$. show all work.$\\an…
$m\angle7 = 73.5^\circ$ --- ### Problem 10
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9. in the figure below, lines $l_1$ and $l_2$ are parallel, angle 13 = …
- Angle 1: $135^\circ$ - Angle 9: $110^\circ$ - Angle 6: $45^\circ$ - Angle 18: $45^\circ$
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q3 - mathematics gr 8 - section 1 | guided notes: describing sequences …
1. **transformation** changes a figure's position, shape, or size. 2. **translation** slides a figure in any direction without changing its size, shape, or orientation. 3. **rotat…
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$\\triangle rst$ and $\\triangle ruv$ are shown below. which statement …
△RST is similar to △RUV.
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drag each angle named on the left to its correct measure on the right. …
- Angle 1: $110^\circ$ - Angle 9: $110^\circ$ - Angle 6: $110^\circ$ - Angle 18: $110^\circ$ Note: Based on the given $70^\circ$ angle, all four angles measure $110^\circ$, matchi…
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charlanden curry q3 - mathematics gr 8 - section 1 | guided notes: desc…
transformation
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c. $(2,-4)$ d. $(-4,2)$ what is the result of reflecting a rectangle ov…
1. c. The size decreases, and the figure is flipped upside down. 2. d. The x-coordinates decrease by 5, and the y-coordinates decrease by 3.
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d. rotation 180 degrees, then dilation by 1.5 a figure is dilated by a …
1. d. The figure is flipped across the origin and maintains its proportions. 2. b. $(-2,4)$
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1. transformations such as translations, reflections, and rotations do …
1. size 2. dilation 3. sides 4. x and y coordinates 5. x
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8) in a right triangle, one acute angle is 24°, the adjacent side to th…
$x\approx21.9$
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15. what is the first step in applying the distance formula? a. subtrac…
a. Subtracting the coordinates
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q3 - mathematics gr 8 - section 1 | lesson: describing sequences of tra…
1. b. (6,−8) 2. d. Translation 3 units right and 4 units up 3. d. Rotation 180 degrees, then dilation by 1.5
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14. what is the distance between points c (2.5, 3.5) and d (-1.5, -4.5)…
b. $\sqrt{80}$
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9. write and solve an equation to find $m\\angle7$. show all work.$\\an…
$m\angle7 = 73.5^\circ$ --- ### Problem 10
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a rectangle has vertices $w(-1, -4)$, $x(-1, -1)$, $y(1, 1)$, and $z(1,…
Are the figures similar? No Are the figures congruent? No
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1. congruent figures are shapes that have the same ____________ and siz…
1. shape 2. translation 3. distance 4. reflection 5. rotation
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q3 - mathematics gr 8 - section 1 | lesson: describing sequences of tra…
1. b. (6,−8) 2. d. Translation 3 units right and 4 units up 3. d. Rotation 180 degrees, then dilation by 1.5
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12. what do you obtain after taking the square root of the sum of the s…
c. The distance
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write the equation in slope-intercept form of the line that is perpendi…
1. $y=\frac{7}{4}x$ 2. $y=\frac{1}{4}x-5$ 3. Perpendicular 4. Parallel 5. $\frac{15}{14}$, $0$, $-\frac{3}{15}=-\frac{1}{5}$
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fido is tied to a leash attached to a post located at (0,0). he runs ar…
15 ft.
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the diagram below shows the map of four straight roads forming 16 numbe…
D. Angle 10 is congruent to angle 15 is enough information to prove that Jefferson and Washington Roads are parallel.
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a. translation by 9 units left and 12 units down b. dilation by scale f…
1. For the dilation rectangle question: b. The new rectangle has side lengths of 6 units and 12 units. 2. For the size-preserving transformation question: a. Dilation
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7. the distance formula is derived from which mathematical theorem? a. …
c. Pythagorean Theorem
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q3 - mathematics gr 8 - section 1 | lesson: describing sequences of tra…
1. a. The area increases by 2.25 times. 2. b. dilation by scale factor of -2 3. b. The new rectangle has side lengths of 6 units and 12 units.
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jason and ronald jason and ronald are camping at fortune island state p…
212 feet
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jason and ronald jason and ronald are camping at fontainebleau state pa…
They will meet at the coordinate point $(-0.5, 0)$
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in the coordinate plane below, each grid line represents 50 feet. each …
Yes, the figures are congruent. Reflecting the blue figure over the x-axis and then translating it 4 units right maps it exactly to the red figure, and rigid motions (reflection a…
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3. what are the coordinates of a point? a. a color code b. a type of eq…
c. A pair of numbers indicating position
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sheri sketched out a pair of parallel line segments and formed a triang…
1. $\angle1 + \angle2 + \angle3 = 180^\circ$: True 2. $\angle2 \cong \angle4$: False 3. $\angle3 \cong \angle6$: True
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is trying to remember how to construct a perpendicular bisector of a li…
C. 1,4,5,3,2
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lesson 1 the origins of world war iireview questions: identifying suppo…
## Section A 1. Benito Mussolini; strong, authoritarian leader 2. Joseph Stalin; industrialize; Five-Year Plans; purges 3. Nazi; unify and reclaim lost territory; Adolf Hitler; ch…
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1. which axis is the vertical axis on a coordinate plane? a. x-axis b. …
c. y-axis
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6) find the value of x in the right triangle with one acute angle of 67…
$x \approx 4.69$
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deltamath ← back to home q3:w5 homework no late credit grade: 17% compl…
$c = -2.4$
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based on the following figure, determine the values. enter your answers…
$x = 6$ and $m\angle ACB = 63$
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what is the area of this figure? 5 mm 7 mm 10 mm 4 mm 3 mm 2 mm 5 mm wr…
58 square millimeters
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1. if a triangle with side lengths of 3, 4, and 5 is rotated 180 degree…
1. b. They remain the same. 2. c. By comparing their side lengths and angles. 3. c. Reflection
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1. how does reflecting a figure over the x-axis affect its coordinates?…
1. b. The y-coordinates change sign. 2. d. 3.00
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1. which transformation would you apply to map a rectangle at (1,1),(1,…
1. A. Translation 2 units right and 4 units up 2. C. The coordinates switch places to become $(9,8)$ 3. A. $(2,-8)$ 4. D. Resizes it while maintaining its shape 5. A. Rotation 180…
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find the measures of angles 1 through 5 in the figure shown. $m\\angle1…
$\angle 1 = 51^\circ$, $\angle 2 = 129^\circ$, $\angle 3 = 51^\circ$, $\angle 4 = 129^\circ$, $\angle 5 = 48^\circ$
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a rectangle is 900 meters long and 600 meters wide. if a strip is added…
The length of the new rectangle is 14 meters, and its area is 154 square meters.
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5) in a right triangle, one acute angle is 49°, the length of one leg i…
$x\approx9.6$ (rounded to one decimal place, or $x=\frac{11}{\tan(49^\circ)}$ for the exact value)
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deltamath ← back to home q3:w5 homework no late credit grade: 17% compl…
$c = -2.4$
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bellringer 1. what is a perfect square number? 2. what is pythagorean t…
1. Un nombre entier qui est le carré d'un autre nombre entier (ex: $4=2^2$, $9=3^2$). 2. Dans un triangle rectangle, $c^2 = a^2 + b^2$, où $c$ est l'hypoténuse et $a$, $b$ les deu…
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find the ratio for sina. (reduce the fraction) 3/5 36/27 4/5 36/45
C. 4/5
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fill in the sentence below with the description that most specifically …
The quadrilateral is most specifically a **rhombus**, because all four of its sides are equal in length, and its opposite angles are congruent.
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7.3.ps-16 writing what is the length of the rectangular plot of land sh…
289 ft
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4) in a right triangle, one acute angle is 31°, the length of the adjac…
$x\approx11.67$
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3) a right triangle with one leg length 15, one acute angle 87°, find t…
1. For the first triangle: $x \approx 0.79$ 2. For the second triangle: $x \approx 11.67$
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when $ac = 3y - 5$ and $hj = 4y + 2$, what is hb ? $hb = \\square$
13
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a graph of a system of linear equations is shown. what is the solution …
(3, 1), the graph of the two equations intersects at this point
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4. $y - 6x = 12$ $y = 6x + 5$
No existe solución para el sistema de ecuaciones, ya que se obtiene una igualdad falsa ($5=12$), lo que indica que las rectas son paralelas y no se intersectan.
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if you have points (3, 4) and (7, 8), what is the distance between them…
points Let $(x_1,y_1)=(3,4)$ and $(x_2,y_2)=(7,8)$. $d=\sqrt{(7-3)^2+(8-4)^2}$ ## Step3: Calculate differences and squares $d=\sqrt{(4)^2+(4)^2}=\sqrt{16+16}$ ## Step4: Simplify t…
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geometry assignment date: 2/11/24 period 2 determine if the two triangl…
1. Congruent, HL 2. Congruent, SSS 3. Not congruent 4. Congruent, HL 5. Congruent, SAS 6. Congruent, SAS 7. Congruent, SAS 8. Congruent, HL 9. Congruent, SSS 10. Not congruent 11.…
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3) find the value of x in the right triangle, where one angle is 26°, t…
$x\approx9.27$
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what is the distance between (0, 0) and (3, 4)? a. 7 b. 4 c. 5 d. 3
c. 5
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the grade of a road is its slope written as a percent. find the grade o…
25%
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a rectangle is 90 meter long and 60 meter wide. if strip of width 2 is …
The new length is approximately 97.87 meters, and the new width is approximately 87.87 meters. The length added to each side is approximately 13.94 meters.
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triangle is 180° given: $y \\parallel z$ prove: $m\\angle5 + m\\angle2 …
The completed two-column proof is: | Statements | Reasons | |------------|---------| | 1. $y \parallel z$ | 1. given | | 2. $\angle 1 \cong \angle 5$, $\angle 3 \cong \angle 6$ | …
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find the slope of the line that goes through the given points. (7, -7) …
B. The slope is undefined.
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which point has coordinates $left(-1, 2\frac{1}{2}\ ight)$? t u v w
U
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which point has coordinates $left(3\frac{1}{2}, -3 ight)$? b c d e
B
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what is the measure of $angle spq$ in this rhombus?$mangle spr=(2x + 13…
$126$
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quadrilateral $abcd$ is a square and the length of $overline{bd}$ is 6 …
3 cm
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t tenth. 2) find the value of x. the right triangle has one leg of leng…
$35.3$
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details no additional details were added for this assignment. which sta…
A parallelogram with diagonals that are congruent and perpendicular
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a graph of a system of linear equations is shown. what is the solution …
(3, 1), the graph of the two equations intersects at this point
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details no additional details were added for this assignment. how can t…
- parallelogram - quadrilateral
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a) write ao in terms of $\boldsymbol{p}$ and/or $\boldsymbol{q}$.b) wri…
a) $\boldsymbol{5p}$ b) $\boldsymbol{-p + q}$ c) $\boldsymbol{9p + q}$
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use the similar figures at the right for the questions below. find the …
Blank 1: $\frac{1}{2}$ Blank 2: $48^\circ$ Blank 3: $3.5$
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a sss b aa c sas d no question 6 (3 points) are the triangles similar? …
First question: c. SAS Second question: b. AA
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writing wednesday write the equation from the given situation. *hint: u…
$55^\circ$ --- ### Thursday Problem (Integer Operations)