Kk tolong jawab nomor 9,10,11 ya kk!!pakai cara nya ya kk
Jawab:
Penjelasan dengan langkah-langkah:
9. ∠ACB = 180° – 108° = 72°
∠CAB = 180° – 127° = 53°
∠ABC = 180° – (∠ACB + ∠CAB)
= 180° – (72° + 53°)
= 55° ⇒ B
10. 4X + X + 40° = 180°
5X = 180° – 40°
= 140°
X = 140° / 5 = 28° ⇒ D