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First, a triangle, by definition, must have exactly 3 sides, so the last part of the question is pointless.
Finding the length of a side depends on what information you do have: two sides and the included angle, one side and two angles, hypotenuse and an angle, hypotenuse and another side. Then there are some combinations involving the lengths of sides and medians or altitudes that will allow you to work out a missing side.
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How do you find the side of an isosceles triangle?
An isosceles triangle has 3 sides 2 of which are equal in length
How can you find sides of a triangle if one of the side and perimeter is given?
That depends on what type of triangle is if the side given is equal to the perimeter divided by 3 then it is an equilateral triangle.
What is a perimeter triangle side?
The perimeter of a triangle is the sum of its 3 sides
How do you find the perimeter of a triangle if one side is 3?
it depends on the triangle.if it is a "pure" triangle (symetrical on all sides) then the permeter is 9
What is the meaning Equal side of the triangle?
All triangles have 3 sides and an isosceles triangle has 2 equal sides whereas an equilateral triangle has 3 equal sides.
