In an isosceles-trapezium, show that the opposite angles are supplementary.

In an isoscles trapezium, show that the opposite angles are supplementary.

An isosceles trapezium has

Write down the converse of following statements: If S is a cyclic quadrilateral, then the opposite angles fo S are supplementary.

If the arms of one angle are respectively parallel to the arms of another angle, show that the two angles are either equal or supplementary.

In an isosceles triangle, prove that the angles opposite to equal sides are equal.

Consider the following statements: When two straight lines intersect: (i)adjacent angles are complementary (ii)adjacent angles are supplementary (iii)opposite angles are equal (iv)opposite angles are supplementary Of those statements which is correct

ABCD is a quadrilateral, the opposite angles of which are supplementary. If Ac is the bisector of angleBAD . Then prove that BC=CD