Question

I already know what a and b are i just need help on c

Answer 1

180⁰

Explanation:

Since the angle of straight line is 180⁰

Answer 2

A and B = 180 degrees

Explanation:

this is because a circle is 360 and a line wich would be cutting the line in half is 180. so the two andles must add up to 180 degrees.