Rotations in the Coordinate Plane

Question 1

What is the mapping rule for a 180 degree rotation about the origin?

Revolt · Accepted Answer

(x, y)g(–x, –y)

Question 2

Triangle QRS is rotated 180° about the origin.What are the coordinates of point S’?

Revolt · Accepted Answer

(2, –1)

Question 3

Rectangle PQRS is rotated 90° counterclockwise about the origin.What are the coordinates of point Q’?

Revolt · Accepted Answer

Q’( –3, 5)

Question 4

What is the coordinate for the image of point H(2, –6) under a 90° clockwise rotation about the origin?

Revolt · Accepted Answer

H’(–6, –2)

Question 5

Iliana rotated trapezoid WXYZ 180° about the origin. What is the correct set of image points for trapezoid W’X’Y’Z’?

Revolt · Accepted Answer

W’(4, –2), X’(3, –4), Y’(1, –4), Z’(0, –2)

Question 6

Angie’s rotation maps triangle XYZ to triangle X’Y’Z’. X(3, –6) maps to X’(–3, 6)Y(1, –2) maps to Y’(–1, 2)Z(–1, –5) maps to Z’(1, 5) Which describes the rotation?

Revolt · Accepted Answer

rotation

Question 7

Andrew’s rotation maps point M(9, –1) to M’(–9, 1). Which describes the rotation?

Revolt · Accepted Answer

rotation

Question 8

Tomaz realized that the tip of a second hand on a clock rotates about the center of the clock. He watched the second hand rotate around the center of the clock for 15 seconds. Which describes the rotation he observed?

Revolt · Accepted Answer

clockwise rotation

Question 9

Triangle XYZ is rotated 90° counterclockwise about the origin.What are the coordinates of point Y’?

Revolt · Accepted Answer

(1, 4)

Question 10

Rectangle PQRS is rotated 90° clockwise about the origin. What are the coordinates of R’?

Revolt · Accepted Answer

R’(–4,1)

Rotations in the Coordinate Plane Answers

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