& ltABE =< Acute erythropenia

In the triangle ABE,

Also in diamond ABCD,

Solve < BAE=36, & ltABE = & ltBEA = & ltEAD=72.

At the same time, because the diagonal divides the angle into two,

So in triangle ADO,

And because the length of each side of the diamond is equal, that is, AB=AD.

So triangle ABE is all equal to triangle ADO.

So EB=OA

Is this it?