Question

Diketahui jajar genjang KLMN dengan besar ∠K = (2y - 15)° dan ∠M = (57 - y)°.
Tentukan besar ∠K, ∠L ,dan ∠N beserta caranya .

Answer 1

∠K = ∠M
2y-15 = 72
2y + y = 72 : 3
= 24

∠K = 2y - 15
= 2.24 - 15
= 48 - 15
= 33°
∠K + ∠L = 180°
33 + ∠L = 180°
∠L = 180 - 33 = 147°

∠N = ∠L
∠N = 147°
∠K + ∠N = 180°
∠N + ∠M = 180°
∠L + ∠M = 180°