PSLE CDEF is a trapezium with CD parallel to FE. CHD and GHF are straight lines and CG = GD. ∠GCF = 96°.
- Find ∠CFH.
- Find ∠DGH.
(a)
∠CFH
= 180° - 96° - 26°
= 58° (Angles sum of triangle)
(b)
∠CHF
= 74° (Alternate angles)
∠DCG
= 74° - 26°
= 48° (Exterior angle of a triangle)
∠DGH
= 180° - 48° - 48° - 26°
= 58° (Angles sum of triangle)
Answer(s): (a) 58°; (b) 58°