Perimeter of a Triangle: Applying the formula

Look at the isosceles triangle below:

What is its perimeter?

Since we are referring to an isosceles triangle, the two legs are equal to each other.

In the drawing, they give us the base which is equal to 4 and one side is equal to 6, therefore the other side is also equal to 6.

The perimeter of the triangle is equal to the sum of the sides and therefore:

$6+6+4=12+4=16$

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What is the perimeter of the given isosceles triangle?

Due to the fact that the the triangle is isosceles, its two legs are equal to one another.

Therefore, the base is 7 and the other two sides are 12.

The perimeter of a triangle is equal to the sum of all the sides together:

$12+12+7=24+7=31$

31

Given the triangle:

What is its perimeter?

The perimeter of a triangle is equal to the sum of all its sides together:

$11+7+13=11+20=31$

31

Look at the triangle below:

What is the perimeter of the triangle?

The perimeter of the triangle is equal to the sum of all sides together, therefore:

$6+8+10=14+10=24$

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Given an equilateral triangle:

What is its perimeter?

Since the triangle is equilateral, that is, all sides are equal to each other.

The perimeter of the triangle is equal to the sum of all sides together, the perimeter of the triangle in the drawing is equal to:

$5+5+5=15$

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Find the perimeter of the triangle ABC

12

Find the perimeter of the triangle ABC

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Find the perimeter of the triangle ABC

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