I'll mark brainiest...

With reference to the diagram, which facts are required to conclude that m∠AED = m∠ACB?

A) AD = DB and AE = EC
B) AB = DE and AC = BC
C) AD = DB and m∠DAE = 90°
D) BD = EC and m∠DAE = 90°

A

Step-by-step explanation:

Process of elimination: the other ones don't make sense and can't really prove the triangles congruent.

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

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happy to

pls mark as brainliest