Are the opposite sides of a kite equal ?

Are the opposite angles of a rhombus equal ?

Show that the line segments joining the midpoints of the opposite sides of a quadrilateral and bisect each other.

Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.

If P is a point (x ,y) on the line y=-3x such that P and the point (3, 4) are on the opposite sides of the line 3x-4y=8, then

Prove: In a parallelogram, opposite sides are equal.

A quadrilateral is a . . . . . . . . . . . . . If a pair of opposite sides are equal and parallel.

When the identical groups are on the same or opposite sides of the bonds in alkenes the isomerism is called as

Prove using vectors the mid-points of two opposite sides of a quadrilateral and the mid-points of the diagonals are the vertices of a parallelogram.

The midpoint of two opposite sides of a quadrilateral and the midpoint of the diagonals are the vertices of a parallelogram. Prove that using vectors.

Find the range of (alpha,2+alpha) and ((3alpha)/2,a^2) lie on the opposite sides of the line 2x+3y=6.