In the figure, ABCD is a parallelogram and EC = ED.
- Find ∠f.
- Find ∠g.
(a)
∠AEB = ∠ABE (Isosceles triangle)
∠f
= 180° - 40° - 40° - 70°
= 30° (Interior angles)
(b)
∠AEB
= 180° - 40° - 40°
= 100° (Angles sum of triangle)
∠g
= 360° - 100°
= 260° (Angles at a point)
Answer(s): (a) 30°; (b) 260°