Question

help me fast...............
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Answer 1

Answer:

The picture shows that the triangle has a little box which means 90 degrees

Step-by-step explanation:

Answer 2

$\large\mathrm\red{We~~know~~that}$

•AB || CD

•Transversal t

•EG bisector of ∠BEF

•FG bisector of ∠EFD

$\large\mathrm\red{To~~prove}$

⇨ ∠EGF = 90°

$\large\mathrm\red{Proof}$

∠BEF + ∠EFD = 180° ➜ Interior Angles of a transversal are Supplementary

⇒ ∠BEF / 2 = ∠GEF

⇒ ∠EFD / 2 = ∠GFE

⇒ ∠GEF + ∠GFE = 90°

According to Angle Sum property of a Triangle, Consider ∆EFG

⇒ ∠E + ∠F + ∠G = 180°

⇒ 90 + ∠G = 180

⇒ ∠G = 180 - 90 = 90

⇒ ∠G = 90°

⇨ ∠EGF = 90°

$\large\mathrm\red{☆~Hence~~proved~☆}$