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Measure it or use trigonometry if the 'included' angle is given.

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Q: How to find perimeter of scalene triangle if one side not given?
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How do you find the perimeter of a scalene triangle?

-- Find the length of one side. -- Find the length of another side. -- Find the length of the remaining side. -- Add the three numbers. -- Their sum is the perimeter of the scalene triangle.


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.


How do you find the perimeter of a triangle when all three sides are given?

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.


How do you find the lateral area of a scalene triangle without the height?

only solids have "lateral area". triangles have "area". the area of a scalene triangle is given by heron's formula. height not needed.


How do you find the perimeter of a triangle if you know the area?

You cannot. For a given area, an equilateral triangle will have the smallest perimeter but that perimeter can be increased - without limit - without increasing the area.


How do you find the perimeter of a triangle with grid paper and no given sides?

count the grids


How do you find the length of a triangle when perimeter is given?

If the triangle is equilateral, you simply divide the perimeter by three to find the length of each side. If the triangle is not equilateral, you will need more information to determine the length of each side.


How do you find the perimeter of a scalene triangle when you only know two sides and the area?

To get the perimeter, you need to add all three sides. I assume you can get the third side by inserting the numbers you know into Heron's formula.


How do you find the perimeter to a triangle?

The perimeter of a triangle is the distance around it. Add the lengths of the three sides to find the perimeter.


What is the difference between an scalene right triangle and a scalene obtuse triangle?

A scalene triangle is a triangle in which all three sides have different lengths. The difference between a scalene right triangle and a scalene obtuse triangle is that in the first one, we can find the measure length of the third side when we know the lengths of the two other sides, and in the second one we cannot.


How do you find the perimeter of a triangle with the perimeter of a rectangle?

There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!


How do you find the perimeter of a triangle when the perimeter is 177?

If you know the perimeter, there is no need to find it again.