Question

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)
Which best describes the transformation?

Answer 1

B. The transformation was a 180° rotation about the origin.

EG. 2020

Answer 2

R (1, 1)
S (3, 1)
T (1, 6)

R' (–1, –1)
S' (–3, –1)
T' (–1, –6)

answer should be
The transformation is a 180° rotation about the origin