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a. 180 - 90 - 60 = 60°
b. 180 - 90 - 60 = 60°
c. md. KL = PQ
jd 》 QR ^2 = PQ^2 - PR^2
13^2 = PQ^2 - 12^2
169 = PQ^2 - 144
169 - 144 = PQ^2
25 = PQ^2
PQ = akar dari 25 = 5
e. KM = QR = 13