Question

va rog ajutati-ma mult!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Salut!

x° + ( 3 x )° = 180°

( 4x )° = 180°

x° = 180 : 4

x° = 45° ===> < ACB = 45° ✅

< ACD = 3 · 45°

< ACD = 135° ✅

< ABC + < ACB + < BAC = 180°

< ABC + 45° + 58° = 180°

< ABC + 103° = 180°

< ABC = 180° - 103°

< ABC = 77° ✅