Question

A 6-inch line segment undergoes a rotation

of 180° about a point. How long is the
resulting line segment?
in.

____in

Answer 1

Answer: 6 inches

Reason:

The length of the segment does not change. The rotation preserves lengths. Imagine that instead of rotating the figure you rotated the camera. That would give an illusion of the figure being rotated. The actual segment stays the same and hence why it keeps the same length.