Given the figure, find
- ∠b
- ∠a
(a)
∠GHM
= 180° - 129°
= 51° (Angles on a straight line)
∠b = 51° (Alternate angles)
(b)
∠MLH
= 180° - 113°
= 67° (Angles on a straight line)
∠a
= 180° - 67° - 75°
= 38° (Angles sum of triangle)
Answer(s): (a) 51°; (b) 38°