cara paket mtk hal 160kelas 7 semester 2

Besarnya sudut a
3a + 2a = 90°
5a = 90°
a = 90/5
a = 18°
Besarnya sudut b
46 + (a + 29) + (5a + 15) = 180°
6a + 90 = 180
6a = 180-90
6a = 90
a = 90/6
a = 15°
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