[" Prove that the sum of either pair of op "],[" is "180^(@).]

Prove that the sum of the three angles of a triangle is 180^(@).

Prove that the sum of the three angles of a triangle is 180^0dot

A point O inside a rectangle A B C D is joined to the vertices. Prove that the sum of the areas of a pair of opposite triangles so formed is equal to the sum of the areas of other pair of triangles.

The sum of the three angles of a triangle is 180^(@)

Prove that the sum of opposite pair of angles of a cyclic quadrilateral is 180^@

Prove that the sum of opposite pair of angles of a cyclic quadrilateral is 180^(@)

If the sides of a quadrilateral touch a circle, prove that the sum of a pair of opposite sides is equal to the sum of the other pair.

If the sides of a quadrilateral touch a circle, prove that the sum of a pair of opposite sides is equal to the sum of the other pair.

In a parallelogram ABCD, prove that sum of any two consecutive angles is 180^(@) .