Construct a quadrilateral with two pairs of parallel sides of

Adjacent sides of a parallelogram have lengths 12.5 cm and 8 cm. The measure of the included angle is 40 degrees. Find the area of the parallelogram to the nearest tenth of

The vertices are WXYZ. WZ is parallel to XY. XW is not parallel to YZ. Angles X and W are right angles. Identify the quadrilateral.

Draw a pair of quadrilaterals, where the first quadrilateral is congruent to the second quadrilateral.

PQRS is a quadrilateral with PS parallel to QR. The perimeter of PQRS is 3 m. The length of PQ is 1 m and the length of PS is x m. The

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

The lengths of the diagonals of a rhombus are 18 cm and 24 cm. What is its perimeter and what is the distance between the parallel sides?

Determine the lengths of the sides of the trapezoid shown in the given figure if the perimeter of the trapezoid is 17 cm.

A parallelogram has a 70 degree angle and sides 6 cm and 10 cm long. How long are its diagonals?

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

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

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