PSLE In the figure, CDEF is a rectangle. The points H, J, and K lie on the rectangle CDEF. FGH and KGJ are straight lines.
- Find ∠HJG.
- Find ∠GFK.
(a)
∠DJK = ∠FKJ = 83° (Alternate angles)
∠HJG
= 83° - 57°
= 26°
(b)
∠HGJ
= 180° - 93° - 26°
= 61° (Angles sum of triangle)
∠FGK = 61° (Vertically opposite angles)
∠ GFK
= 180° - 83° - 61°
= 36° (Angles sum of triangle)
Answer(s): (a) 26°; (b) 36°