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b. <TRQ = 180 - (90+45)
= 180 - 135 = 45 derajat
c. <TQR = 45 derajat
Maaf kalau ada kesalahan
= 6 cm
b. Sudut TRQ= 180 drjt - (90 drjt + 45 drjt)
= 180 drjt - 135 drjt
= 45 drjt
c. Sudut TQR= 45 drjt