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125 r = 180
R = 180 - 125 = 55
Q = 115 + q = 180
115 Q = 180
Q = 180 - 115 = 65
Besar P = R + Q + P = 180
55 + 65 + P = 180
120 P = 180
P = 180 - 120
P = 60
sdt SQR sama sdt PQR berpelurus, sdt PQR 180 drjt - 115 drjt = 65 drjt
segitiga itu 180 drjt , brarti utk mencari sdt P, 180 drjt - 55 drjt - 65 drjt = 125 drjt - 65 drjt = 60 drjt
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