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Are some isosceles triangles equilateral triangles

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The measure of an exterior angle of a triangle is what equal to the measure of either remote interior angle

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Q: A triangle has a perimeter of 42in the lengths of two sides of the triangle are 13in and 16in find the length of the third side?
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Related questions

How do you find the length of a triangle?

Find the perimeter by adding the lengths of the sides


What do you do to find the perimeter of a triangle?

The perimeter of a triangle is equal to the length of its three sides added together. If you do not know the lengths of the sides, there are many different mathematical techniques for discovering them.


How do you work out the perimeter of a non right-angled triangle?

-- 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.


What is perimeter of an acute triangle with sides?

Add the lengths of the 3 sides to get the perimeter.


How do you work out the perimeter for a triangle?

-- Make sure you have the lengths of all three sides -- Add up the lengths of all three sides to get the perimeter of the triangle.


The perimeter of a triangle?

is the sum of the lengths of the three sides.


Perimeter of isosceles triangle?

It is the sum of the lengths of its sides.


How many inches what is the perimeter of the triangle?

A perimeter of a triangle is the sum of all three lengths on the sides.


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 perimeter of an equilateral triangle?

It is the sum of the lengths of the three sides. However, since all three sides are of the same length, the perimeter equals three times the length of any one side.


What is the formula for the length of a square?

A square has not a length but a perimeter; this perimeter is the sum the sides lengths.


How do you find the perimeters of a triangle?

The perimeter of a triangle is the sum of the lengths of its three sides.

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