Tolong dijawab pakai cara…

Diurutin aja ya jawabannya 🙂 sori kalo slah hebe

A
∠RPQ = 180° – (∠R + ∠Q)
∠R = 45°
∠Q = 180 – 120 = 60°
∠RPQ = 180° – (45° + 60°)
            = 180° – 105°  
          = 75°

B
nilai x
5x = 180° - ∠RPQ
5x = 180° – 75°
5x = 105°
x = 21°

C
∠PQR = ∠Q = 60°

Semoga membantu 🙂