Question

I slept through class now I feel like skinning myself

7. Explain why a+b=d.

Answer 1

c + d = 180 (property of 2 angles on a line), we can say that d = 180 - c

a + b + c = 180 (property of a triangle), we can say that a + b = 180 - c

therefore a + b = d

Explanation: