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Earn +20 ptsQ: What does the perimeter have to equal in a triangle?
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What is the perimeter of an equilateral triangle with an altitude of 15?
An equilateral triangle has 3 equal interior angles each of 60 degrees. There are two right angled triangles in an equilateral triangle. So we can use trigonometry to find the length of one side of the equilateral triangle then multiply this by 3 to find its perimeter. Hypotenuse (which is one side of the equilateral) = 15/sin 60 degrees = 17.32050808 17.32050808 x 3 = 51.96152423 Perimeter = 51.96152423 units.
What is the perimeter of a 30 60 90 triangle if the hypotenuse is 3?
The perimeter of a 30-60-90 triangle if the hypotenuse is 3 is: 7.098
What is the sum of side lengths of a triangle?
That number is called the "perimeter" of the triangle.
A triangle has a base of length 20 units and perimeter of 66 units. If a similar triangle has a base of 15 units what is its perimeter?
49.5 units
What is the formula for the perimeter of a equilateral triangle?
Add the lengths of each side together to get the perimeter.
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