In the figure, CDEF is a parallelogram and GE = GF.
- Find ∠h.
- Find ∠j.
(a)
∠CGD = ∠CDG (Isosceles triangle)
∠h
= 180° - 42° - 42° - 70°
= 26° (Interior angles)
(b)
∠CGD
= 180° - 42° - 42°
= 96° (Angles sum of triangle)
∠j
= 360° - 96°
= 264° (Angles at a point)
Answer(s): (a) 26°; (b) 264°