How to find the perimeter of a triangle - SSAT Elementary Level Quantitative

To solve, simply use the formula for the perimeter of an equilateral triangle. Thus,

Remember, the special property of an equilateral triangle is that all of its sides are the same length so, you can either add the side length 3 times or multiply it by 3.

The perimeter is the sides added together.

To find the perimeter of a triangle, we will use the following formula:

where a, b, and c are the lengths of the sides of the triangle.

So, in the triangle

we can see the lengths of the sides are 11cm, 12cm, and 6cm. Knowing this, we can substitute into the formula. We get

When finding the perimeter of any triangle, you will need to add all three sides. In this case, it is important to note that this is the perimeter of a scalene triangle. A scalene triangle has no congruent/equal sides. The only choice that adds up to 21 mm with no equal sides is:

To find the perimeter of a triangle, add all of its three sides. 5 + 4 + 3 = 12

Since the problem asks about an equilateral triangle (one that has three equal sides), we just need to multiply the given side's length by 3.

To find the perimeter of a triangle, simply add all three sides together.

When finding the perimeter of any triangle, you will need to add all three sides. In this case, it is important to note that this is the perimeter of an equilateral triangle. An equilateral triangle has congruent/equal sides. All the choices add up to mm (except the choice that shows multiplication instead of addition), but only one choice shows equal sides that add up to mm:

To find the perimeter of a triangle, simply add all three sides together.

To find perimeter of an equliateral triangle, simply multiply the side length by 3. Thus,

A triangle is the only shape with angles.

A triangle has sides.

To solve, simply use the following formula for the perimeter of an equilateral triangle. Thus,

To find the perimeter of any triangle you will need to add up all the sides. For this triangle, you will add since an equilateral triangle has 3 congruent sides.

When finding the perimeter of any triangle, you will need to add all three sides. In this case, it is important to note that this is the perimeter of an equilateral triangle. An equilateral triangle has three equal sides. All the choices add up to 18cm, but only one choice shows three equal sides.

An isosceles triangle has two equal sides, and one different side. All of the answer choices add up to 22 mm, but only one choice shows two equal sides and one different side that add up to 22mm.

In an equilateral triangle, all sides are of equal length. The perimeter of a triangle is the sum of the lengths of the three sides. Our equilateral has a side of length 10, so all sides will be equal to 10. We can find the perimeter by adding up 10 three times.

A triangle has sides, and its perimeter is the length of all the sides added together. Since all the sides are the same length, dividing the perimeter by will give the length of one side. divided by is inches.