on a common hypotenuse ab two right angled triangles acb and adb are situated on opposite sides .prove that angle bac = angle bdc

Question

Answer it urgently please sir step by step 

Answer 1

Can you describe this figure a little better?

 

What I produced was a quadrilateral having diagonal AB and right angles at C & D.  But that would require angle D to be 90 degrees, but angle BAC to be acute.