The figure shows a rectangle CDEF. ∠CFG = 59° and ∠DFE = 42°. Find
- ∠DFG
- ∠CDF
(a)
∠DFG
= 59° + 42° - 90°
= 11° (Overlapping angles)
(b)
∠CFD
= 59° - 11°
= 48° (Overlapping angles)
∠CDF
= 180° - 90° - 48°
= 42° (Angles sum of triangle)
Answer(s): (a) 11°; (b) 42°