Besar sudut EAC PADA GAMBAR DISAMPING ADALAH... TLG DIJAWAB BSK DIKUMPUL! SERTA CARANYA

∠CBD = 125°
∠ABC = ∠ACB

∠ABC + ∠CBD = 180° (krn berpelurus)
∠ABC + 125 = 180
∠ABC = 180 - 125
∠ABC = 55°
∠ACB = 55°

Jumlah sudut dlm segitiga itu 180°
∠BAC + ∠ABC + ∠ACB = 180
∠BAC + 55 + 55 = 180
∠BAC + 110 = 180
∠BAC = 180 - 110
∠BAC = 70°

∠EAC + ∠BAC = 180° (krn berpelurus)
∠EAC + 70 = 180
∠EAC = 180 - 70
∠EAC = 110°