## How do you define a triangle?

A **triangle** has three sides, three vertices, and three angles. The sum of the three interior angles of a **triangle** is always 180°. The sum of the length of two sides of a **triangle** is always greater than the length of the third side. A **triangle** with vertices P, Q, and R is denoted as △PQR.

## What is the best definition of a triangle?

A **triangle** is defined by it’s number of sides. It is a closed three sided figure with the interior angles being equal to 180 degrees. Apart from that, **triangles** can have lots of variations.

## Does a triangle have 3 equal sides?

Equilateral. An equilateral **triangle has three equal sides** and angles. It will always **have** angles of 60° in each corner.

## What are the 3 sides of triangle?

There are three types of triangle based on the length of the sides: **equilateral**, **isosceles**, and **scalene**.

## What are the elements of a triangle?

A **triangle** is a closed figure made of three line segments. Every **triangle** has three sides, three angles, and three vertices. These are known as the parts of a **triangle**.

## What are parts of a triangle?

A **triangle** is a shape formed when three straight lines meet. All **triangles** have three sides and three corners (angles). The point where two sides of a **triangle** meet is called a vertex.

## What is another name for Triangle?

In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for triangle, like: pyriform, pyramid, deltoid, triangular, **trigon**, set-square, deltoidal, trigonal, **triangulum**, trilateral and pyramidal.

## How many types of triangles are there?

To learn about and construct the seven **types of triangles** that exist in the world: equilateral, right isosceles, obtuse isosceles, acute isosceles, right scalene, obtuse scalene, and acute scalene.

## What are the sides of a triangle called?

The side opposite to the right **angle** is the hypotenuse, the longest side of the triangle. The other two sides are called the legs or catheti (singular: cathetus) of the triangle.

## How do you find the side lengths of a triangle?

Use the **side lengths** to classify the **triangle** as acute, right, or obtuse. Classify the **triangle** as acute, right, or obtuse. Compare the square of the **length** of the longest **side** with the sum of the squares of the **lengths** of the two shorter **sides**.

## What is an uneven triangle called?

(iii) **Scalene triangle**: if none of the three sides of a **triangle** are equal to each other, it is **called** a **scalene triangle**. Properties of the **scalene triangle**: All angles of a **scalene triangle** are **unequal**.

## Does 4 5 6 make right triangles?

The three numbers **4**, **5**, **6 make** a Pythagorean Triple (they could be the sides of a **right triangle**).

## How do you find the side of a triangle given two sides?

**Right Triangles and the Pythagorean Theorem**

- The Pythagorean Theorem, a2+b2=c2, a 2 + b 2 = c 2, can be used to
**find**the length of any**side**of a right**triangle**. - The
**side**opposite the right angle is called the hypotenuse (**side**c in the figure).

## How do you know if its a right triangle?

A **right triangle** is a **triangle** in which one of the angles is a 90∘ angle. A **triangle** can be determined to be a **right triangle if** the side lengths are **known**. **If** the lengths satisfy the Pythagorean Theorem (a2+b2=c2) then **it is a right triangle**.