Question

In the picture triangle A'B'C' is an image of triangle ABC after a rotation. The center of rotation is D.

What is the length of side B'C'?

Answer 1

Answer: same as original side BC

Explanation:

No picture or other information about triangle ABC is attached,

However, I can tell you this. - If triangle ABC was only rotated, with no other transformation, then the side length of B'C' is the same as the original side length of BC.

I hope this helps.