Rotations

Question 1

Examine the rotation. Which best describes point D?

Revolt · Accepted Answer

B: center of rotation

Question 2

Which shows the image of rectangle ABCD after the rotation (x, y) → (–y, x)?

Revolt · Accepted Answer

A: [Image: On a coordinate plane, 2 rectangles are shown. The...]

Question 3

Triangle ABC was rotated about the origin. Which rule describes the rotation?

Revolt · Accepted Answer

A: R0, 90°

Question 4

Which are not changed after a rotation? Check all that apply.angle measuresorientationsizeshapeposition of center of rotation

Revolt · Accepted Answer

A: angle measures; C: size; D: shape; E: position of center of rotation

Question 5

After a rotation, A(–3, 4) maps to A'(4, 3), B(4, –5) maps to B'(–5, –4), and C(1, 6) maps to C'(6, –1). Which rule describes the rotation?

Revolt · Accepted Answer

C: R0, 270°

Question 6

Which shows the image of triangle WXY after the transformation R0, –90°(x, y)?

Revolt · Accepted Answer

C: [Image: On a coordinate plane, 2 triangles are shown. The ...]

Question 7

Micaela tried to rotate the square 180° about the origin. Is her rotation correct? If not, explain why.

Revolt · Accepted Answer

C: No, the vertices of the image and pre-image do not correspond.

Question 8

A rectangle was rotated 270° about the origin.The image is shown.Which points are vertices of the pre-image? Check all that apply.

Revolt · Accepted Answer

C: M(3, 2); E: N(3, 1)

Question 9

After a rotation of 90° about the origin, the coordinates of the vertices of the image of a triangle are A'(6, 3), B'(–2, 1), and C'(1, 7). What are the coordinates of the vertices of the pre-image?

Revolt · Accepted Answer

A: (3, -6); B: (1, 2); C: (7, -1)

Question 10

After a rotation of 90° about the origin, the coordinates of the vertices of the image of a triangle are A'(6, 3), B'(–2, 1), and C'(1, 7). What are the coordinates of the vertices of the pre-image?

Revolt · Accepted Answer

C: ✔ (3, -6)

Rotations Answers

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