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jadi 70°+95°+sdt 3 = 180°
sdt 3 = 180-(70+95)
= 180- 165
=15°
1=5 kan sama besar suudutnya tuh. berarti 5 tuh = 95 derajat
2=110 derajat
180 - no.2= 180 - 110 = 70
6= 70
jumlah sudut segitiga tuh kan 180 derajat, jadi...
180=no 6 + no 5 + no 3
180 = 70+ 95 + no 3
180 = 165 + no 3 (pindah ruas)
180- 165 = no 3
no3=15