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? 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.

Just took the test the answer is 180 degrees.

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

Explanation :-

In the given question we can see that ΔRST was transformed using the rule (x, y) → (–x, –y), such that the vertices of the triangles are R (1, 1) S (3, 1) T (1, 6)  and R' (–1, –1) S' (–3, –1) T' (–1, –6). Thus the transformation must be a 180° rotation about the origin.

do i do it on a graph?

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have