Question

William needs to work out the size of angle Y in this diagram

One of William’s reasons are wrong.

Write down the correct reason.

Answer 1

because internal staggal angles are equal

Explanation:

The first reason is wrong.

Angle EGH and DEG are internal staggal angles:

the two angles are on both sides of the cut line EG, and the two angles are between the two divided lines.

{the definition of internal staggal angle}