Given that DEFG is a rhombus, calculate
- ∠l
- ∠n
(a)
∠DHG = ∠EHK = 98° (Vertically opposite angles)
∠l
= 180° - 98° - 20°
= 62° (Angles sum of triangle)
(b)
∠GFE
= 180° - 20° - 20°
= 140° (Angles sum of triangle)
∠n
= 360° - 98° - 140° - 20°
= 102° (Sum of Angles in a quadrilateral)
Answer(s): (a) 62°; (b) 102°