Mathematics

5 July, 10:00

Triangle RST was transformed using the rule (x, y) → (-x, - y). The vertices of the triangles are shown.

R (1, 1) R' (-1, - 1)

S (3, 1) S' (-3, - 1)

T (1, 6) T' (-1, - 6)

Which best describes the transformation?

The transformation was a 90° rotation about the origin.

The transformation was a 180° rotation about the origin.

The transformation was a 270° rotation about the origin.

The transformation was a 360° rotation about the origin.

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