besar sudut QPR adalah... mohon bantuannya...

PRQ=180-132=48°
JADI QPR=180-(48+72)
=180-120=60°

diketahui :
∠PQR = 72°
∠QRS = 132°

ditanya :
∠QPR?

dijawab :
∠QRP + ∠QRS = 180°
∠QRP + 132° = 180°
∠QRP = 180°-132°
∠QRP = 48°

∠QPR + ∠QRP + ∠PQR = 180°
∠QPR + 48° + 72° = 180°
∠QPR = 180°-48°-72°
∠QPR = 60°