If a line is drawn parallel to the base of an isosceles triangle to intersect its equal sides. Prove that the quadrilateral, so formed is cyclic.

If a line is drawn parallel to the base of an isosceles triangle to in

1.	If a line is drawn parallel to the base of an isosceles triangle to intersect its equal sides. Prove that the quadrilateral, so formed is cyclic.
Answer» If a line is drawn parallel to the base of an isosceles triangle to intersect its equal sides. Prove that the quadrilateral, so formed is cyclic.