HJKL is a parallelogram. HLM and JNM are straight lines. Find the values of
- ∠j
- ∠n
- ∠m
- ∠k
(a)
∠j
= 180° - 51° - 56°
= 73° (Interior angles)
(b)
∠NHJ = ∠NJH = 51° (Isosceles triangle)
∠n
= 180° - 56° - 51° - 51°
= 22° (Interior angles)
(c)
∠m
= 180° - 51° - 51°
= 78° (Isosceles triangle)
(d)
∠k = 56° (Alternate angles)
Answer(s): (a) 73°; (b) 22°; (c) 78°; (d) 56°