Perimeter of a trapezoid
("trapezium" in British usage)
Definition:
The total distance around the outside of a
trapezoid
Try this
Drag any orange dot to resize the trapezoid. The perimeter is calculated as you drag.
(If there is no image below, see support page.)
How to find the perimeter of a trapezoid
Like any polygon, the perimeter is the total distance around the outside,
which can be found by adding together the length of each side.
Or as a formula:
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perimeter = a+b+c+d
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where:
a,b,c,d are the lengths of each side of the trapezoid
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In the figure above, drag any orange dot to resize the trapezoid. From the side lengths shown, calculate the perimeter
and verify your result matches the formula at the top of the diagram.
Related polygon topics
General
Types of polygon
Area of various polygon types
Perimeter of various polygon types
Angles associated with polygons
Named polygons
(C) 2007 Copyright John Page
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