Which angle has the same measurement as angle DEA, and how do you know that the measurement is the same? Will mark or how ever you call it.

∠DEA=∠BAC

Step-by-step explanation:

∠DAE=∠BCA (corresponding angles)

Angles in a triangle add up to 180:

Angles in ΔDAE=Angles in ΔABC

∠DAE+∠EDA+∠DEA=∠BCA+∠ABC+∠BAC

∠EDA+∠DEA=∠ABC+∠BAC (since ∠DAE=∠BCA, we can cancel them out)

∠DEA=∠BAC (∠EDA=∠ABC=90)

b

step-by-step explanation: