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3x + 2x + 90 = 180
5x = 90
x = 18
Maka, PRQ = 2x = 36
PQR = 3x = 54
54 dan 36
Sudut RPQ = 180/2
= 90 derajat
90 drjt + 2x + 3x = 180 drjt
90 drjt + 5x = 180 drjt
5x = 180 drjt - 90 drjt
5x = 90
x = 18
1. Sudut PQR = 3 x 18
= 54 drjt
2. Sudut PRQ = 2 x 18
= 36 drjt
Jawaban : (D)