Geometry Proof steps help needed! (please explain)

Question

dehydrated · Answer

attachment

will.h · Answer

Wonderful question!

will.h · Answer

Let's work backwards shall we?

will.h · Answer

ADE = 28
DAE = 90
AED = ?
By the sum of angle theorem we will evolve to solve for Angle AED
and that would give us the answer for both 2 and 3 numbers 
So 
ADE + DAE + AED = 180 (sum of triangle)
28 + 90 + AED = 180
118 + AED = 180
AED = 62

So 
3: measure of angle AED = 62
2:Triangle sum Theorem 
1: Corresponding angles are congruent 

So your answer is D

dehydrated · Answer

@Will.H sorry openstudy froze up!

will.h · Answer

oh i was wondering what happened 
Np anyway

dehydrated · Answer

@Will.H ok so since it totals 180 when added with the angles its congruent and the measure is 62. Thank you for explaining it I know it takes some time!

will.h · Answer

you welcome