Parallelogram
Definition

A parallelogram is a quadrilateral with opposite sides parallel.


Parallelogram

Note that this results in the opposite sides also being congruent.


Demonstration
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Instructions text as in global.js

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Perimeter and Area of a Parallelogram

Given the following:


m: The length of a side of the parallelogram

n: The length of a side adjacent to side m of the parallelogram

h: The height of the parallelogram

b: The base of the parallelogram

P: The perimeter of the parallelogram

A: The area of the (interior of the) parallelogram


P = 2m + 2n    or    P = 2(m + n)

A = bh


Demonstration of Perimeter and Area (Parallelogram)
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Instructions text as in global.js

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m: n: h:
Slider controls and functions (explanation)
Objects controls and functions (explanation)