Given that DEFG is a rhombus, calculate
- ∠l
- ∠n
(a)
∠DHG = ∠EHK = 98° (Vertically opposite angles)
∠l
= 180° - 98° - 18°
= 64° (Angles sum of triangle)
(b)
∠GFE
= 180° - 18° - 18°
= 144° (Angles sum of triangle)
∠n
= 360° - 98° - 144° - 18°
= 100° (Sum of Angles in a quadrilateral)
Answer(s): (a) 64°; (b) 100°