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10
= 36 derajat
sudut b = 3 x 180
10
= 54 derajat
sudut c = 5 x 180
10
= 90 derajat
sudutΔ besaarnya = 180°
2/10 x 180 = 36°
3/10 x 180 = 54°
5/10 x 180 = 90°
Jadi besar tiap- tiap sudut Δ = 36°, 54° dan 90°°semoga membantumu