Rotations

Question 1

Triangle ABC was transformed using the rule (x, y) → (–y, x). The vertices of the triangles are shown.A (–1, 1)B (1, 1)C (1, 4) A' (–1, –1)B' (–1, 1)C' (–4, 1)

Revolt · Accepted Answer

The transformation was a 90° rotation about the origin.

Question 2

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

Revolt · Accepted Answer

On a coordinate plane, a triangle has points R prime (1, 2), S prime (3, negative 1), T prime (7, 1).

Question 3

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown.R (1, 1)S (3, 1)T (1, 6) R' (–1, –1)S' (–3, –1)T' (–1, –6)

Revolt · Accepted Answer

The transformation was a 180° rotation about the origin.

Question 4

Quadrilateral ABCD is transformed according to the rule (x, y) → (y, –x). Which is another way to state the transformation?

Revolt · Accepted Answer

R0, 270°

Rotations Answers

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