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besar sudut = 3x , 2x , x
jmlh sudut segitiga = 180
maka :
3x + 2x + x = 180
6x = 180
x = 180/6
x = 30 derajat
maka :
> besar sudut 1 = 3x = 3 x 30 = 90
> besar sudut 2 = 2x = 2 x 30 = 60
> besar sudut 3 = x = 30
segi tiga ini termasuk jenis segitiga SIKU-SIKU
3x + 2x + x =
6x =
x = : 6
x =
sudut 1 = 3x = 3.(30) =
sudut 2 = 2x = 2.(30) =
sudut 3 = x =
jadi,jenis segitiga adalah : siku-siku