PSLE CDEF is a trapezium with CD parallel to FE. CHD and GHF are straight lines and CG = GD. ∠GCF = 95°.
- Find ∠CFH.
- Find ∠DGH.
(a)
∠CFH
= 180° - 95° - 26°
= 59° (Angles sum of triangle)
(b)
∠CHF
= 75° (Alternate angles)
∠DCG
= 75° - 26°
= 49° (Exterior angle of a triangle)
∠DGH
= 180° - 49° - 49° - 26°
= 56° (Angles sum of triangle)
Answer(s): (a) 59°; (b) 56°