Question

Proof

Answer 1

do c and d meet at straight lines? is that the assumption?

Answer 2

yes

Answer 3

if you continue b out to meet c we get a right triangle and the angle they meet at is the complement of theta.

since b and d are perp, when d meets c its angle is the complement to the complement which is the same as saying = to theta...does that make sense?

Answer 4

umm kinda confusing

Answer 5

does that make sense?

Answer 6

yes")

Answer 7

Thank you very much~!