The sum of five angle of an octagon is 750 . The other three angle are equal . Find the sizes of each of the equal angle
2 answers
the sum of all the angles is ... 8[180º - (360º / 8)]
the sum of all the angles of an octagon is 6*180 = 1080
3x+750 = 1080
3x = 330
x = 110
3x+750 = 1080
3x = 330
x = 110