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An Octagon contains 8 sides whereas a triangle contains only 3 sides
Yes. It is the measures of the three sides that need to be equal not simply the numbers in different units. So a triangle of with sides of 1 yard, 3 feet and 36 inches would be equilateral even though the 3 numbers are different.
Given side lengths of 8 units, an equilateral triangle will have an altitude of 7 (6.9282) units.
To find the perimeter of a triangle, add the three sides. Perimeter = 6in + 8in + 10in = 24in.
6+8+10=24 inches All you have to do is add the sides together