PSLE JKLM and KMNP are rhombuses. LQM is a straight line.
- Find ∠MKQ.
- Find ∠LMN.
(a)
∠KML
= (180° - 100°) ÷2
= 80° ÷ 2
= 40° (Isosceles triangle)
∠MKQ
= 180° - 126° - 40°
= 14° (Angles sum of triangle)
(b)
∠KPN
= 360° - 303°
= 57° (Angles at a point)
∠KMN = ∠KPN = 57° (Rhombus)
∠LMN
= 57° - 40°
= 17°
Answer(s): (a) 14°; (b) 17°