How to make tangent on this question
 
                
            ABC is an isosceles triangle with AB = AC .D and E are two points at AB and AC such that AD =AE.Show that BE =CD
In a quadrilateral ABCD, with unequal sides if the diagonals AC and BD intersect at right angles , then what is relation between sides square??
What are the different categories into which the assessees are divided with regard to resident? Give a brief account of each of them
explain the theorem which is that the sum of all the angles of a pentagon lies 540