Question

no 9 tolong bantu pakai caranya ..

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Answer 1

∠ACB = 180 - 108

∠ACB = 72°

∠BAC = 180 - ∠ABC - ∠ACB

∠BAC = 180 - 36 - 72

∠BAC = 72°

Answer 2

Diketahui:

gambar soal.

Ditanya:

∠BAC =?

Pembahasan :

∠BCA = 180⁰ - ∠BCD

= 180- 108

= 72⁰

JUMLAH SUDUT DALAM SEGITIGA ABC = 180⁰

72 + 36 + ∠BAC = 180

108 + ∠BAC = 180

∠BAC = 180-108 = 72⁰

jawaban :

∠BAC = 72⁰