Triangles

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SSAT Elementary Level Quantitative › Triangles

Questions 1 - 10

You can find the perimeter of a triangle if you know .

three side lengths

the height and base

the area

its angles

Explanation

$Perimeter_{\Delta }= the ;sum ;of ;all ;the;sides =side_{1} +side_{2}+side_{3}$

Find the perimeter of an equilateral triangle with side length 1.

$\frac{1}{2}$

Explanation

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.

You can find the perimeter of a triangle if you know .

three side lengths

the height and base

the area

its angles

Explanation

$Perimeter_{\Delta }= the ;sum ;of ;all ;the;sides =side_{1} +side_{2}+side_{3}$

Find the perimeter of an equilateral triangle with side length 1.

$\frac{1}{2}$

Explanation

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.

A triangle has the side lengths , , and . What is the perimeter of the triangle?

$\frac{28}{13}$

$\frac{25}{13}$

Explanation

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

Add the lengths together to find the perimeter.

What is the PERIMETER of the triangle in the figure?

Screen_shot_2014-01-31_at_4.17.07_pm

Explanation

Because the question asks you to find the PERIMETER of the triangle, you are looking to figure out the distance around the outside of the triangle. You find the perimeter of triangles simply by adding the length of the three sides together. So the correct answer here is , or .