Question

Triangle DEF is an isosceles, so DEF = DFE.

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


105°

125°

150°

165°

Answer 1

I believe its 105 degrees

Answer 2

m∠CFD=
`105\°`

Explanation:

we know that

m∠CFD+m∠DFE=
`180\°` ------> by supplementary angles

we have

that

m∠DFE=m∠DEF=
`75\°`

so

m∠CFD+
`75\°=180\°`

m∠CFD=
`180\°-75\°=105\°`