To calculate the area of a parallelogram from vectors, find the cross product of the sides and vectors. The area equals the length of the cross product of two vectors. More »

The area of a triangle can be calculated from its vertices by using a formula to find the distances between them. This allows for the calculation of the area of a parallelogram with the same base and height as the triang... More »

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The area of a parallelogram can be calculated by multiplying the length of the base by the height to the top, perpendicular to the base. Either edge on either set of sides can be oriented to be the base. The formula for ... More »

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Regents Prep explains that the quickest method for proving that a quadrilateral is a parallelogram is if one pair of opposite sides of the quadrilateral are both parallel and congruent. However, several other forms of pr... More »

One proof regarding a parallelogram is used to show that the two pairs of opposite sides are congruent. When given a parallelogram with angles A, B, C and D, the line segments AB and CD are congruent, as are the line seg... More »

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The perimeter of a parallelogram, as for any polygon, is the sum of the lengths of its sides. The opposite sides of a parallelogram are parallel and have the same measurement. The formula for its perimeter is twice the s... More »

A rhombus is a four-sided figure with opposite sides parallel, making it a parallelogram. The rhombus differs from other parallelograms in that all four sides are equal in length. More »

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