Question

What do you have to know about any segments and angles in a figure to decide whether the figure has line symmetry?

Answer 1

Explained below.

Explanation:

When drawing line of symmetry on a figure and reflecting, we have to know that pairs of segments in that figure must have the same length while pairs of angles must have the same measurement. This is to ensure that half of that figure must concise with the other half part of it when that figure is folded across a line of symmetry.