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sudut sudut segitiga 2 : 3 : 5
jumlah perbandingan sudut = 10
jumlah besar sudut sudut = 180°
besar masing-masing sudut =
2/10 × 180 = 36°
3/10 × 180° = 54°
5/10 × 180° = 90°
jumlah ketiga sudut dalam segitiga adalah
( 36 + 54 + 90) ° = 180°