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a) 8/10 = BE/5
8 × 5 = 10BE
40/10 = 10BE/10
4 = BE
b) sudut B = 90°
2)
a) AC/AB = MK/KL
AC/9 = 8/6
6AC/6 = 72/6
AC = 12 cm
b) sudut L = sudut B = 60°
3)
a) 12/15 = KN/6
15 KN/15 = 72/15
KN = 4,8
b) sudut T = sudut M