In the figure, CDEF and DHJK are two rhombuses. If ∠HJK = 107° and ∠CFE = 99°, calculate
- ∠JHK
- ∠JED
- ∠KLE
(a)
∠JHK
= (180° - 107°) ÷ 2
= 36.5° (Isosceles triangle)
(b)
∠JED = ∠CFE = 99° (Corresponding angles)
(c)
∠KLE
= 99° - 36.5°
= 62.5° (Exterior angle of a triangle)
Answer(s): (a) 36.5°; (b) 99°; (c) 62.5°