Penjelasan dengan langkah-langkah:
2a + a = 180
3a = 180
a = 180/3
a = 60°
c + c + c = 180°
3c = 180°
c = 180/3
c = 60°
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Penjelasan dengan langkah-langkah:
2a + a = 180
3a = 180
a = 180/3
a = 60°
c + c + c = 180°
3c = 180°
c = 180/3
c = 60°