Question

Hi! Currently struggling with understanding this.

Answer 1

Answer:

Therefore the length FG is 16 unit.

Step-by-step explanation:

Given:

∠E ≅ ∠G = 90°

DF bisects ∠EDG

Bisector Divide the angle in EQUAL parts

∴∠EDF ≅ ∠GDF

FE = n +5

FG = 2n - 6

To Find:

FG = ?

Solution:

In  ΔEDF  and ΔGDF  

∠E ≅ ∠G = 90°    ……….{Given}

∠EDF ≅ ∠GDF     ..……..{DF bisects ∠EDG}

DF ≅ DF              ……….{Reflexive Property}

ΔEDF ≅ ΔGDF  ….{ By Angle-Angle-Side Congruence test}

∴  FE ≅ FG        .....{corresponding parts of congruent triangles are congruent}

Substituting the values of FE and FG we get

$n+5=2n-6\\2n-n=5+6\\n=11$

Substituting ' n ' in FG we get

$FG=2\times 11-6=22-6=16\ unit\\FG =16\ unit$

Therefore the length FG is 16 unit.