BCDE is a rectangular piece of paper. Corners D and E are folded upwards as shown. ∠DGH = 20° and ∠EGE = 15 °
- Find ∠DHG
- Find ∠EGD
(a)
∠DHG
= 180° - 90° - 20°
= 70° (Angles sum of triangle)
(b)
∠EGD
= 180° - 15° - 15° - 20° - 20°
= 110° (Angles on a straight line)
Answer(s): (a) 70° (b) 110°