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Find the other 2 sides and then add the 4 sides together.

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12y ago

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How do you find the perimeter of an isosceles trapezoid if you don't know two sides?

you dont


To find the perimeter of a trapezoid?

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If you have the length of each of the three sides of a triangle, you can find the perimeter of (the distance around) the triangle by adding the length of the sides. Their sum will be the perimeter of this geometric shape.


What is the formula to find the perimeter of a trapezoid?

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