In the figure, NPQR is a square and ∠PSR = 42°. Calculate
- ∠RTQ
- ∠PRT
(a)
∠PTS
= 180° - 90° - 42°
= 48° (Angles sum of triangle)
∠RTQ = 48° (Vertically opposite angles)
(b)
∠RPT = 90° ÷ 2 = 45°
∠PRT
= 180° - 42° - 90° - 45°
= 3° (Angles sum of triangle)
Answer(s): (a) 48°; (b) 3°