Q:
# What Are Characteristics of a Right Triangle?

**A right triangle, also known as a right-angled triangle, always has one angle at 90 degrees.** The side directly opposite this angle is known as the hypotenuse, which is the longest side of a triangle.

If the lengths of two sides of a triangle are known, it is possible to calculate the length of the third side using Pythagoras' theorem. This theorem states that the sum of the square of the hypotenuse is equal to the sum of the squares on the other two sides. This theorem only applies to right triangles.

When a right triangle has sides with lengths that are each an integer, it's called a Pythagorean triangle.

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## What Are Some Geometry Formulas for Triangles?

A: A triangle is a three-sided polygon where the sum of its interior angles equals 180 degrees. Some common formulas for triangles include perimeter, the tota... Full Answer >Filed Under: -
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## Does a Triangle Have Parallel Sides ?

A: A triangle can never have any parallel lines because there must be three angles that add up to 180 degrees, which makes it impossible for the three sides t... Full Answer >Filed Under: -
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## How Many Angles Does a Triangle Have?

A: Every triangle has three angles, and the sum of those angles is always 180 degrees. This is true whether the triangle is an equilateral, isosceles, scalene... Full Answer >Filed Under: -
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## How Many Degrees Does an Equilateral Triangle Have?

A: The sum of the interior angles of an equilateral triangle equals 180 degrees. This stems from the fact that the combined interior angles of any given trian... Full Answer >Filed Under: