Question

Four angles of a pentagon are 100,175,85,and 7degrees find the fifth angle.

Answer 1

Answer:

total interior angle of any polygon=180(n-2)

Pentagon=180(5-2)

=540°

let fifth angle be x

100+175+85+7+x=540

367+x=540

x=540-367

x=173°

fifth angle=173°