The figure shows a rectangle FGHJ. ∠FJK = 60° and ∠GJH = 39°. Find
- ∠GJK
- ∠FGJ
(a)
∠GJK
= 60° + 39° - 90°
= 9° (Overlapping angles)
(b)
∠FJG
= 60° - 9°
= 51° (Overlapping angles)
∠FGJ
= 180° - 90° - 51°
= 39° (Angles sum of triangle)
Answer(s): (a) 9°; (b) 39°