Question

Can someone help me by explaining this to me?!
Question coming soon just hang tight!

Answer 1

ok... so if you look at the diagram and that you are told

so look at the drawing...

triangle DCE is isosceles since the base angles are equal... so then DC = DE

and since you are told DB is equal or congruent to DF, then you san say

CB = EF

so you can prove congruency by Angle Angle side postulate

hope it helps