Rotations — Unit test

Question 1

Which triangle has 0 reflectional symmetries?

Revolt · Accepted Answer

A triangle has all different side lengths and angle measures.

Question 2

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 3

On a coordinate plane, a trapezoid has points H prime (negative 3, negative 2), J prime (negative 2, negative 3), K prime (negative 3, negative 4), G prime (negative 5, negative 2).

Revolt · Accepted Answer

(3, 2)

Question 4

On a coordinate plane, 2 parallelograms are shown. The first parallelogram has points A (negative 4, 4), B (negative 2, 4), C (negative 5, 1), D (negative 2, 1). The second parallelogram has points A prime (negative 2, 5), B prime (1, 5), C prime (negative 3, 2), D prime (0, 2).

Revolt · Accepted Answer

T2, 1(x, y)

Question 5

Which shows the image of quadrilateral ABCD after the transformation R0, 90°?

Revolt · Accepted Answer

On a coordinate plane, a rectangle has points A prime (0, negative 1), B prime (1, 0), C prime (3, negative 2), D prime (2, negative 3).

Rotations — Unit test Answers

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