-- Measure or calculate the length of each of its 3 sides.
-- Add the lengths of its 3 sides.
-- The sum is the perimeter of the triangle.
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A right triangle is easy, simply multiply the two sides and divide by two. A non-right triangle is a bit more of a challenge. You have to make it a right triangle by adding a right triangle to it. Calculate and then subtract the area of what you had to add.
what is an non exsample of an perimrter
A triangle with sides that do not have equal lengths.
A triangle is not necessarily pitched or non-pitched. It is more of an accessory.
a scalene triangle has no equal sides. an isosceles triangle has two equal sides