Question

Alison is trying to prove that co-interior angles on parallel lines add up to 180°. She has drawn a diagram where angles & and ~ are co-interior, as shown below. Fill in the gaps in Alison's working by choosing from the options provided in the boxes. You may use each option more than once.

Answer 1

see below

Explanation:

I know that x+y=180 because angles on a straight line add up to 180° and y=z because corresponding angles are equal.

Hope this helps! :)