几何
三角形、圆、解析几何与证明题。
-
determining the number of possible triangles in △mno, m = 20, n = 14, a…
There is only one distinct triangle possible, with $m\angle N\approx33^{\circ}$.
-
applying the law of sines to a real - world problem. ships a and b are …
The distance from ship A to the submarine is about $1084.92$ feet. The distance from ship B to the submarine is about $1261.57$ feet.
-
a circle centered at (-1, 2) has a diameter of 10 units. amit wants to …
No, he did not calculate the distance correctly.
-
determining unknown measures. what is the measure of angle e? m∠e = _. …
$m\angle E = 55^{\circ}$ $EF\approx12.49$
-
identifying the radius given an equation in general form what is the ra…
8
-
consider a circle whose equation is $x^{2}+y^{2}+4x - 6y-36 = 0$. which…
- To complete the square for the $x$ terms, add 4 to both sides. - The center of the circle is at $(-2,3)$.
-
practice applying the law of sines. which expression gives the exact va…
$\frac{21.3\sin(34^{\circ})}{\sin(118^{\circ})}$
-
story 1: tewksbury teen dies after slammed into ground at house party p…
A. No answer possible without witness - report information. B. No answer possible without grand - jury details. C. 1) No answer possible without trial outcome information. 2) a) N…
-
determining whether a point lies on a circle. a circle centered at the …
Yes, the distance from the origin to the point $(8,\sqrt{17})$ is 9 units.
-
to derive the standard formula of a circle, a radius r is constructed a…
D. \(x - h\), G. \(y - k\)
-
a circle has a diameter of 12 units, and its center lies on the x - axi…
B. $(x - 6)^2+y^2 = 36$, E. $(x + 6)^2+y^2 = 36$
-
writing an equation given a graph. what is the equation of the circle s…
$x^{2}+(y + 3)^{2}=4$
-
using the law of sines for the ambiguous case △jkl has j = 7, k = 11, a…
$11\sin(16^{\circ}) = 7\sin(K)$; $m\angle K\approx26^{\circ}$; $m\angle K$ could also be $154^{\circ}$
-
roxanne is measuring the diameter and the radius of different - sized c…
yes 2
-
14. if ∠4≅ ∠5, is c || d? justify your answer. 15. given that m∠2=(12x …
### Explicación paso a paso: #### Paso1: Analizar el ángulo correspondiente en el problema 14 Si $\angle4\cong\angle5$, estos son ángulos alternos internos. Según el teorema de án…
-
solving a real - world problem a forest ranger in the west observation …
A. 9.91 mi
-
what is the area of the semicircle? 20 mm 157 mm² 62.8 mm² 125.6 mm² 31…
157 $mm^{2}$
-
what is the area of a circle with a radius of 12 feet? (use 3.14 for π.…
D. $452.16$ ft$^{2}$
-
using the law of sines for the asa case. determine the measures of all …
$m\angle K = 42^{\circ}$ $JK\approx10.52$ $LK\approx20.78$
-
using the law of sines for the aas case. complete the work to determine…
$5.81$
-
proving the law of sines. two right triangles, △abd and △acd, were crea…
$b\sin(C)=h$
-
two right triangles, △abd and △acd, were created from △abc by construct…
Transitive
-
proving the law of sines two right triangles, △abd and △acd, were creat…
$\frac{h}{b}$
-
proving the law of sines two right - triangles, △abd and △acd, were cre…
$c\sin(B)=h$
-
proving the law of sines. two right tri constructed. c sin(b) = h. foll…
\(c\sin(B)=a\sin(C)\) (derived from the fact that the altitude \(h\) can be expressed as \(h = c\sin(B)\) and \(h=a\sin(C)\) in the right - triangles formed within \(\triangle ABC…
-
proving the law of sines two right triangles, △abd and △acd, were creat…
$\frac{h}{c}$
-
3. given: l || m; ∠6 ≅ ∠11 prove: a || b 1. ∠6 ≅ ∠11 1. given 2. ∠6 ≅ ∠…
Se ha probado que $a\parallel b$
-
two right triangles, △abd and △acd, were created from △abc by construct…
The proof is completed as shown above, and $\frac{\sin(B)}{b}=\frac{\sin(C)}{c}$ is proved.
-
other than a no - solution set, use interval notation to express the so…
The solution set in interval notation is $(-\infty,-6)$. The correct graph is a number - line with an open circle at - 6 and an arrow pointing to the left. Among the given options…
-
two right triangles, △abd and △acd, were created from △abc by construct…
The property is the transitive property.
-
two right triangles, △abd and △acd, were created from △abc by construct…
$b\sin(C)=h$
-
other than a no - solution set, use interval notation to express the so…
A. The solution set in interval notation is $(-\infty,-10)$; E. (The graph that has an arrow pointing to the left starting from an open - circle at - 10 on the number line)
-
two right triangles, △abd and △acd, were created from △abc by construct…
$\frac{h}{b}$
-
proving the law of sines two right - triangles, △abd and △acd, were cre…
$\frac{\sin(B)}{b}=\frac{\sin(C)}{c}$
-
other than a no - solution set, use interval notation to express the so…
The solution set in interval notation is $(-\infty,-6)$. The correct graph is the one with an open - circle at $-6$ and an arrow pointing to the left, which is likely option A (as…
-
proving the law of sines. two right triangles, △abd and △acd, were crea…
$\frac{h}{c}$
-
reviewing the sine ratio. which sine ratios are correct for △pqr? check…
$\sin(P)=\frac{r}{q}$
-
determining equations of concentric circles concentric circles are circ…
$(x - 8)^2+(y - 9)^2=3$, $(x - 8)^2+(y - 9)^2=14$
-
ematics gr 8 | summary / reflection: identifying and interpreti... refl…
Identifying congruent shapes using transformations helps in real - world problems like architecture, design, and manufacturing. Challenges include complex shapes and visualization…
-
guided notes: identifying and interpreting cong... target due: last thu…
1. Rotations 2. Image
-
tics gr 8 | guided notes: identifying and interpreting cong... target d…
1. Transformation 2. Dilation 3. Corresponding
-
guided notes: identifying and interpreting cong... target due: last thu…
1. center of rotation 2. congruent 3. transformation
-
matics gr 8 | guided notes: identifying and interpreting cong... target…
1. shape 2. corresponding 3. coordinate
-
the transformation that slides a shape from one position to another wit…
1. Translation 2. Rotation 3. Reflection
-
the distance between the points (-1, 4) and (2, 1) is: select an answer…
$\sqrt{18}$
-
how can you check if two shapes are congruent? a. by measuring the peri…
C. By comparing corresponding sides and angles
-
which transformation does not change the size or shape of a figure? a. …
d. Rotation
-
mathematics gr 8 | lesson: identifying and interpreting congruenc... ta…
For the question about dilation: d. The size changes proportionally while shape stays the same
-
q1 - accelerated mathematics student portal quest ed mathematics gr 8 |…
1. a. The shape changes orientation but not size 2. None of the given options are correct. The correct answer is that the size changes proportionally while the shape remains the s…
-
a. congruence b. similarity c. symmetry d. proportionality which statem…
1. a. Congruence 2. b. Corresponding parts must match in length and angle measure.
-
accelerated mathematics gr 8 | lesson: identifying and interpreting con…
a. Congruence
-
arion bruce - accelerated mathematics gr 8 | lesson: identifying and in…
1. c. Identical sizes and shapes 2. d. They change the size of the shape
-
accelerated mathematics gr 8 | lesson: identifying and interpreting con…
c. Identical sizes and shapes
-
accelerated mathematics gr 8 | lesson: identifying and interpreting con…
B. Reflect, then translate, then compare corresponding parts
-
which of the following figures has an∠abc of 90 °? select an answer:
The first figure.
-
which transformation results in a figure that is not congruent to the o…
a. Dilation
-
which of the following figures has an∠abc of 90°? select an answer:
The second figure.
-
in the figure abce is a rectangle and abdf is a parallelogram. you are …
(iv) $\therefore\triangle AEF\cong\triangle BDC$ (RHS)
-
find the size in degrees of angle θ. select an answer: θ = 30° θ = 45° …
$\theta = 30^{\circ}$
-
the ladder dad uses is 5m long, and he stands 3m away from the foot of …
4 m
-
from the top of a vertical cliff 125 metres high, the angle of depressi…
361.3 m
-
use your calculator and your knowledge of trigonometry to calculate sid…
$3\sqrt{3}\text{m}\approx5.2\text{m}$
-
use your calculator and your knowledge of trigonometry to calculate sid…
$3\sqrt{3}\text{ m}$
-
a. find the area of the square. show your work. s = 4, so a = 4^2 = 16 …
a. The area of the square is 16 square units. b. The base of the triangle $b = 2$, and the area of the triangle is $\sqrt{3}$ square units.
-
this question has two parts. first, answer part a. then, answer part b.…
$s = 4$, so $A=4^2=16$ units$^2$
-
answer attempt 1 out of 3 a reflection over the line y = -x a countercl…
A counterclockwise rotation of 180° about the origin
-
answer attempt 1 out of 3 a reflection over the y - axis a clockwise ro…
A clockwise rotation of 90° about the origin
-
guided notes: transformations of figures on co... target due: last wedn…
translate and rotate in the opposite way
-
answer attempt 1 out of 3 a counterclockwise rotation of 180° about the…
A counterclockwise rotation of 180° about the origin
-
guided notes: transformations of figures on co... target due: last wedn…
1. Coordinates 2. Degrees 3. 90
-
from the given figure, find the volume of the paper towel (use π = 3.14…
$2450.76$ $cm^{3}$
-
ics gr 8 | guided notes: transformations of figures on co... target due…
1. Opposites 2. Quadrant 3. Translating
-
which transformation would take figure a to figure b?
Translation 4 units to the right and 6 units up.
-
guided notes: transformations of figures on co... the transformation th…
1. Rotation 2. Origin 3. x
-
a garden consists of a square of side 12m, and a semi - circle with cen…
$158.14$ m²
-
which transformation would take figure a to figure b?
Reflection across the y - axis.
-
question 44 what is the image point of (-7,5) after a translation right…
$(-2,9)$
-
what is the image point of (7,7) after a translation left 5 units and d…
(2, 2)
-
what is the image point of (-6,9) after a translation left 4 units and …
$(-10,8)$
-
what is the image point of (0, -1) after a translation left 5 units and…
$(-5,-2)$
-
this question has two parts. first, answer part a. then, answer part b.…
perimeter: 12 units area: 6 units$^2$
-
follow the guided instructions below to rotate the figure 270° counter …
After rotating the triangle 270° counter - clockwise about the origin using the rule $(x,y)\to(y, - x)$ for each vertex and drawing a circle centered at the origin with radius equ…
-
read the excerpt from chapter 6 of lizzie bright and the buckminster bo…
Turner's act of whispering when he tells his father, "It matters to me."
-
remind your child that you can find the area of a rectangle by multiply…
$\frac{2}{3}$ square - mile
-
the scale of a real life object to the reduced scale drawing is 5:2. if…
4
-
activity multiplying fractions to find area do this activity with your …
$\frac{8}{15}$ square mile
-
dear family. this week your child is learning to multiply fractions to …
$\frac{1}{6}$ square foot
-
7 jaylen draws the height shown in the parallelogram. he estimates that…
Yes, Jaylen's estimate is reasonable. By counting the grid - squares along the height line, the height is close to 5 units. ### 8.
-
triangle y is a scaled copy of triangle x. what scale factor takes tria…
$0.5$
-
quadrilateral b is a scaled copy of quadrilateral a. quadrilateral a qu…
10.2
-
polygon p is a scaled copy of polygon o. what is the value of q?
$95$
-
rectangle r is a scaled copy of rectangle q. what is the value of x?
18
-
rectangle b is a scaled copy of rectangle a. what scale factor takes re…
2.6
-
polygon z is a scaled copy of polygon y. what is the value of x? polygo…
$32$
-
quadrilateral i is a scaled copy of quadrilateral h. what is the value …
$1.4$
-
quadrilateral c is a scaled copy of quadrilateral b. what is the value …
$4\frac{2}{5}$
-
pool eight - ball pool is a popular game played on a pool table that ha…
a. $57.3$ in² b. $4.0$ in²
-
question given m||n, find the value of x.
\(x = 18\)
-
question given m||n, find the value of x. answer accept i out of 2 x = …
19
-
question given m||n, find the value of x. answer attempt 1 out of 2 x =…
\(x = 7\)