opposite sides of a quadrilateral

Prove that if both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram...

A quadrilateral with both pairs of opposite sides parallel is always a _______. => square or rectangle or rhombus or parallelogram..

A quadrilateral having pair of opposite sides equal and all angles measuring the same is called __________. => a rectangle or a rhombus or a trapezoid or a square..

Identify a quadrilateral that has four equal sides, parallel opposite sides, and no right angle. => rhombus or square or trapezoid or rectangle..

of a quadrilateral: Two sides of a quadrilateral, which have no common point, are called opposite sides. In the diagram, AB and DC is one pair of opposite sides. AD and BC is the other pair of opposite sides..

Which statements help you conclude that the quadrilateral shown is a rhombus? I. It has four right angles. II. The measures of all its sides are equal. III. It has two pairs of parallel, opposite sides. IV. It has one pair of parallel opposite ..

A quadrilateral is a polygon having 4 sides. ABCD is a quadrilateral and AC and BD are its diagonal..

A quadrilateral is a polygon having 4 sides. ABCD is a quadrilateral and AC and BD are its diagonal..

Sufficient conditions for a quadrilateral to be a parallelogram - We can state the defining property of a parallelogram as follows: "If a quadrilateral is a parallelogram, then its opposite sides are equal..

Which polygon has twice the number of sides of a quadrilateral? => Octagon or Decagon or Heptagon or None of the above..