QUESTION IMAGE
Question
the graph shows quadrilaterals ghij and uvwx.
is ghij congruent to uvwx? justify your answer.
yes, because a rotation 90° counterclockwise around the origin followed by a reflection across the y - axis maps ghij onto uvwx.
yes, because a reflection across the x - axis followed by a translation left 8 units and up 1 unit maps ghij onto uvwx.
no, because \\(\overline{ij}\\) and \\(\overline{wx}\\) do not have the same length.
no, because \\(\angle j\\) and \\(\angle x\\) do not have the same measure.
To determine congruence, we analyze side lengths and transformations. First, calculate the length of \(\overline{IJ}\) and \(\overline{WX}\). For \(\overline{IJ}\), points \(I(5, - 5)\) and \(J(8, - 4)\). Using the distance formula \(d=\sqrt{(x_2 - x_1)^2+(y_2 - y_1)^2}\), \(d_{IJ}=\sqrt{(8 - 5)^2+(-4+5)^2}=\sqrt{9 + 1}=\sqrt{10}\). For \(\overline{WX}\), points \(W(-5,5)\) and \(X(-4,8)\), \(d_{WX}=\sqrt{(-4 + 5)^2+(8 - 5)^2}=\sqrt{1+9}=\sqrt{10}\), so length is same. Now check transformations: Reflect \(GHIJ\) over \(x\)-axis: \(G(5, - 3)\to(5,3)\), \(H(2, - 4)\to(2,4)\), \(I(5, - 5)\to(5,5)\), \(J(8, - 4)\to(8,4)\). Then translate left 8 units: \((5,3)\to(-3,3)\) (not matching \(V(-4,2)\) etc.). Wait, re - evaluate the third option: Wait, no, let's check the third option's logic. Wait, the third option says "No, because \(\overline{IJ}\) and \(\overline{WX}\) do not have the same length." But our calculation shows they do. Wait, maybe I made a mistake. Wait, coordinates: \(GHIJ\): Let's get correct coordinates. From the graph, \(G\) is at \((5, - 3)\)? Wait, no, looking at the grid, the blue quadrilateral \(GHIJ\): \(H\) is at \((2, - 4)\), \(G\) at \((5, - 3)\), \(I\) at \((5, - 5)\), \(J\) at \((8, - 4)\). Red quadrilateral \(UVWX\): \(V(-4,2)\), \(W(-5,5)\), \(X(-4,8)\), \(U(-3,5)\). Now, let's recalculate \(\overline{IJ}\): \(I(5, - 5)\), \(J(8, - 4)\): \(\Delta x=3\), \(\Delta y = 1\), length \(\sqrt{3^2 + 1^2}=\sqrt{10}\). \(\overline{WX}\): \(W(-5,5)\), \(X(-4,8)\): \(\Delta x = 1\), \(\Delta y=3\), length \(\sqrt{1^2+3^2}=\sqrt{10}\). Now check the second option: Reflect over \(x\)-axis: \(H(2, - 4)\to(2,4)\), \(G(5, - 3)\to(5,3)\), \(I(5, - 5)\to(5,5)\), \(J(8, - 4)\to(8,4)\). Then translate left 8 units: \((2,4)\to(-6,4)\) (not \(W(-5,5)\)). Wait, maybe the correct approach is: The key is that the third option is wrong because \(\overline{IJ}\) and \(\overline{WX}\) do have the same length. Wait, maybe the second option's transformation: Reflect over \(x\)-axis (flips \(y\)-sign) and then translate left 8 and up 1. Let's take \(H(2, - 4)\): reflect over \(x\)-axis: \((2,4)\), translate left 8: \(2-8=-6\), up 1: \(4 + 1 = 5\) → \((-6,5)\) (not \(W(-5,5)\)). The first option: Rotate \(90^{\circ}\) counter - clockwise around origin: For a point \((x,y)\), rotation \(90^{\circ}\) counter - clockwise is \((-y,x)\). Take \(H(2, - 4)\): \((4,2)\), then reflect over \(y\)-axis: \((-4,2)\) (which is \(V(-4,2)\)). \(G(5, - 3)\): rotate \(90^{\circ}\) counter - clockwise: \((3,5)\), reflect over \(y\)-axis: \((-3,5)\) (not \(X(-4,8)\)). Hmm, maybe my coordinate reading is wrong. Alternatively, the correct answer is the second option? Wait, no, let's check the length of the vertical and horizontal sides. In \(GHIJ\), the distance between \(G(5, - 3)\) and \(I(5, - 5)\) is \(|-3+5| = 2\) (vertical side). In \(UVWX\), distance between \(V(-4,2)\) and \(X(-4,8)\) is \(|2 - 8|=6\) (vertical side). Oh! Here's the mistake. I calculated the wrong sides. \(\overline{GI}\) (vertical side of \(GHIJ\)): \(G(5, - 3)\), \(I(5, - 5)\), length \(2\). \(\overline{VX}\) (vertical side of \(UVWX\)): \(V(-4,2)\), \(X(-4,8)\), length \(6\). So the vertical sides are not equal. Therefore, the quadrilaterals are not congruent because corresponding sides (like the vertical sides) have different lengths. Wait, but the third option says "No, because \(\overline{IJ}\) and \(\overline{WX}\) do not have the same length." But we saw \(\overline{IJ}\) and \(\overline{WX}\) have same length, but the vertical sides are different. Wait, maybe the third option is in…
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
No, because \(\overline{IJ}\) and \(\overline{WX}\) do not have the same length.