In the figure, CDEF is a parallelogram and GE = GF.
- Find ∠h.
- Find ∠j.
(a)
∠CGD = ∠CDG (Isosceles triangle)
∠h
= 180° - 49° - 49° - 70°
= 12° (Interior angles)
(b)
∠CGD
= 180° - 49° - 49°
= 82° (Angles sum of triangle)
∠j
= 360° - 82°
= 278° (Angles at a point)
Answer(s): (a) 12°; (b) 278°