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Verified answer
< K+ < L+ < M = 180x + (5x-7) + (2x-13) = 180
8x - 20 = 180
8x = 200
x = 25
< LKM = < K
< K = X
< LKM = 25
< KLM = < L
< L = 2x-13
< KLM = 2(25) - 13
= 50 - 13
= 37
<K + <L + <M = 180°
x + 2x - 13° + 5x - 7° = 180°
x + 2x + 5x - 13° - 7° = 180°
8x - 20° = 180°
8x = 180° + 20°
8x = 200°
x = 200°/8
x = 25°
maka,
a) <LKM atau <K
= x
= 25°
b) <KLM atau <L
= 2x - 13°
= 2(25°) - 13°
= 50° - 13°
= 37°
semoga membantu