Given: angle EBA is congruent to angle CBD, measure of angle ABD is = to 90 degrees.
Prove: angle EBA is the complement of the angle ABC.

Write a proof....

I have no idea how to!

Thank you!

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  1. all the angles add up to 180.
    Since angle ABD is 90, the other two must add up to 90.

    So, they are complementary angles.

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