Show that the line segment which joins the midpooints of the oblique sides of a trapesium is parallel to the sides.

Prove by vector method that the line segment joining the mid-points of the diagonals of a trapezium is parallel to the parallel sides and equal to half of their difference.

Show that the line segment joining the midpoints of two 'sides of a triangle is parallel to. the third side and is half its length using vectors.

Using vector properties, show that, a straight line obtained by joining the mid-points of the oblique sides of a trapezium is parallel to the parallel sides of the trapezium and is equal to half of the sum of lengths of the parallel sides.

Prove that the line segment joining the mid-points of the lateral sides of any trapezium is parallel to any of its parallel sides.

Prove that the line segment joining the mid points of two sides of a triangle is parallel to its third side.

Prove that the line segment joining the middle point of two sides of a triangle is parallel to the third side.

Prove that the line segment joining the mid-point of two transverse sides of a trapezium is parallel to its parallel sides.

Prove that the line segment obtianed by joining the midpoints of two transversed sides of a trapezium is parallel to the parallel sides of the trapezium.

Prove that the line segment obtained by joining the midpoints of the diagonals of a trapezium is parallel to the parallel sides of the trapezium.

The line joining the mid-points of two sides of a triangle is parallel to the third side.