So ∠ bad +∠ BDA = 135.

∠BAC+∠BCA= 135

Because ∠ BDA = 90

So ∠ bad = 45.

So BD=AD

Because ∠BAD+∠CAD=∠BAC

So ∠ bad+∠ CAD+∠ BCA = 135.

So ∠ CAD+∠ BCA = 90

Because < EBD+< BHD = 90.

And ∠BHD=∠AHE (the relative vertex angles are equal).

∠CAD=∠CAD

So ∠EBD=∠CAD.

At △BDH and △ADC.

EBC =∠ Canadian dollar

{ BD=AD

∠ADB=∠ADC=90

So △BDH is equal to△ △ADC(ASA).

So BH=AC (the corresponding sides of congruent triangles are equal).

According to the first question, the second question is easy to ask. Just ask for it.

∠ CAD+∠ AHE = 90。 Second, please do the math yourself.

There are many online. Just search them. You needn't spend so much time asking questions.