Someone please answer this quick. FIrst person to answer I will make brainliest.

In triangle ABC with an acute angle C,

AE

and

BD

are altitudes. Prove that △ABC~△EDC

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?