FINDING PERIMETER OF TRIANGLE WITH SIDE LENGTHS WORKSHEET

Work out the perimeter of each of these equilateral triangles

Problem 1 :

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Problem 2 :

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Problem 3 :

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Problem 4 :

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Calculate the perimeter of each of these isosceles triangles

Problem 5 :

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Problem 7 :

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Find the unknown side length of the triangle given the perimeter P. Then classify the triangle by its side lengths.

Problem 1 :

If the perimeter of the given triangle is 49 inches, find the missing side.

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Problem 2 :

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Problem 3 :

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Problem 4 :

The perimeter of a triangle is 29 millimeters. The length of the first side is twice the length of the second side. The length of the third side is 5 more than the length of the second side. Find the side lengths of the triangle. Then classify the triangle by its side lengths.

Solution

Problem 5 :

The perimeter of a triangular window is 141 inches. The ratio of the side lengths of the window is 11 : 18 :18. Draw and label a diagram of the window. What are the side lengths of the window? Classify the window by its side lengths.

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Problem 6 :

The ratio of the angle measures of a triangle is 7 : 16 : 22. Find the angle measures. Then classify the triangle by its angle measures.

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Problem 7 :

The ratio of the side lengths of a triangle is 7 : 24 : 25. The perimeter of the triangle is 392 inches.

a) Find the side lengths. Then classify the triangle by its side lengths.

b) is the triangle a right triangle ? How do you know?

Solution