In the figure, ∠DFE = 90°. ∠DFG is 38° more than ∠EFG.
- What line is perpendicular to DF?
- Find ∠DFG.
(a)
Line EF or FE is perpendicular to DF.
(b)
∠EFG = 1 u
∠DFG = 1 u + 38
1 u + 1 u + 38° = 90° (Right angle)
2 u = 90° - 38° = 52°
1 u = 52° ÷ 2 = 26°
∠DFG
= 26° + 38°
= 64°
Answer(s): (a) EF or FE; (b) 64°