BCDE is a parallelogram. BEF and CGF are straight lines. Find the values of
- ∠q
- ∠t
- ∠s
- ∠r
(a)
∠q
= 180° - 51° - 58°
= 71° (Interior angles)
(b)
∠GBC = ∠GCB = 51° (Isosceles triangle)
∠t
= 180° - 58° - 51° - 51°
= 20° (Interior angles)
(c)
∠s
= 180° - 51° - 51°
= 78° (Isosceles triangle)
(d)
∠r = 58° (Alternate angles)
Answer(s): (a) 71°; (b) 20°; (c) 78°; (d) 58°
