Carilah ∠x dan ∠y pada gambar-gambar berikut. 1. BA = BC

Carilah ∠x dan ∠y pada gambar-gambar berikut. 1. BA = BC 2. CB = CA, BA = BD

Jawaban

(1) ∠x = 75°, ∠y = 30°
(2) ∠x = 69°, ∠y = 42°

 

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