Question

m(< B) = 2 supra 3 x m(< A)
m(< C) = 1 supra 6 x m (< A)
m(< D) = un intreg si 1 supra 4 x m(< B)
Aflati masurile unghiurilor <- unghi
Ajutati-ma va roooog! Este urgent!

Answer 1

∡D = 5/4 ∡ B = 5/4 * 2/3 ∡A = 5/6 ∡A

∡A+ ∡B+ ∡C+ ∡D= 360
∡A + 2/3∡ A+ 1/6∡A + 5/6 ∡A= 360

6/6∡A + 4/6∡ A+ 1/6∡A + 5/6 ∡A= 360
16/6∡A =360
∡A = 360*6/16
∡A=135
∡B= 135*2/3= 90
∡C = 135/6 = 22°30'
∡D = 135*5/6= 112° 30'