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1. jika lurus semua sudutnya 180
2. bangun segitiga jumlah sudutnya 180
maka jawabannya :
x drajat = 180 -85 -35
= 60 drajat
w drajat = 180 - 85
= 95 drajat
z drajat = 180 - 35
= 145 darjat