Construct a quadrilateral with two pairs of parallel sides of

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If a quadrilateral has one pair of parallel sides, is it a trapezoid?

For parallelogram RSTU, side RS is 3 cm shorter than side ST. The perimeter of parallelogram RSTU is 42 cm. Find RS and ST.

Construct trapezium ABCD so that BC equals 6 cm, AB equals 3 cm, angle B equals 80^{o} and angle C equals 70^{o}. Measure BD.

The bisector of one of the angles of a rectangle also bisects a side of the rectangle. Find the perimeter of the rectangle if you know that the smaller side of the

Carpenters use parallel wall studs to build support for walls. A carpenter has built two wall studs given by HG and CD in the figure below. Find the measure of angle BDC

You know that the sizes of all the angles in a triangle add up to 180 degrees. Justify that the sum of the sizes of all the angles in every quadrilateral is

You know that the sizes of all the angles in a triangle add up to 180 . Justify that the sum of the sizes of all the angles in every quadrilateral is

The sides of a quadrilateral ABCD are 6 cm, 8 cm, 12 cm and 14 cm (taken in order) respectively, and the angle between the first two sides is a right angle.

A rectangle is 14 cm wide and 48 cm long. Find the measures of the acute angle between its diagonals.

Does a quadrilateral always have one pair of parallel sides?

If one pair of opposite sides of a quadrilateral are parallel and the other pair is equal in length then is the quadrilateral parallelogram?

You know that the sizes of all the angles in a triangle add up to 180 . Justify that the sum of the sizes of all the angles in every quadrilateral is

The diagonals of a parallelogram intersect at a 42 degree angle and have lengths of 12 and 7cm. How do you find the lengths of the sides of the parallelogram?

Find the lengths of the diagonals of a parallelogram with adjacent sides of 12cm and 13 cm if the angle between the sides is 50 degrees. The shorter diagonal is what in