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= 5/10 X 180
= 90
b = 2/10 X 180
= 36
c =. 3/10 X 180
= 54
Jumlah perbandingan 3 sudut tsb. = 5 + 2 + 3 = 10
Jumlah besar 3 sudut suatu segitiga adlah 180° maka
Beasr sudut dengan perbandingan 5 = × 180° = 90°
Besar sudut dengan perbandingan 2 = × 180° = 36°
Besar sudut dengan perbandingan 3 = × 180° = 54°