Jawaban:
C. 72°
Penjelasan dengan langkah-langkah:
A+B = 180°
2/3 B + B = 180°
5/3 B = 180°
B = 108 °
A = 2/3 B
A = 2/3 × 108°
A = 72°
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Jawaban:
C. 72°
Penjelasan dengan langkah-langkah:
A+B = 180°
2/3 B + B = 180°
5/3 B = 180°
B = 108 °
A = 2/3 B
A = 2/3 × 108°
A = 72°