Jawaban:
20°
Penjelasan dengan langkah-langkah:
jumlah sudut segitiga → 180°
2a + 3a + 4a = 180°
9a = 180°
a = 180° / 9
a = 20°
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Jawaban:
20°
Penjelasan dengan langkah-langkah:
jumlah sudut segitiga → 180°
2a + 3a + 4a = 180°
9a = 180°
a = 180° / 9
a = 20°