Question

Angle DEF measures 75. What is the measure of angle CFD?

Answer 1

I guess it's 105 since 180-75=105

Answer 2

The measure of ∠CFD is 105°

Explanation:

Given the figure of isosceles triangle in which measure of ∠DEF=75°

∠DEF≅∠DFE

we have to find the measure of ∠CFD

As CG is a straight line

Therefore ∠CFD and ∠DFE forms a linear pair

⇒ ∠CFD + ∠DFE=180°

∠CFD + ∠DEF=180° ( as ∠DEF≅∠DFE)

∠CFD + 75=180°

∠CFD = 180-75=105°

Hence, the measure of ∠CFD is 105°

Option 1 is correct