# What does it mean to classify a triangle by its sides?

## What does it mean to classify a triangle by its sides?

When classifying a triangle by its sides, you should look to see if any of the sides are the same length. If no sides are the same length, then it is a scalene triangle. If two sides are the same length, then it is an isosceles triangle. If all three sides are the same length, then it is an equilateral triangle.

What are the classification of triangles according to angles?

Classification by Angle Measure
Acute Triangle All interior angles measure less than 90°
Right Triangle Exactly one interior angle measures 90°
Obtuse Triangle Exactly one interior angle measures more than 90°

What are the 7 types of triangle?

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 two ways to classify triangles?

Classifying Triangles by Angles Triangles can also be classified by their angles. In an acute triangle all three angles are acute (less than 90 degrees). A right triangle contains one right angle and two acute angles. And an obtuse triangle contains one obtuse angle (greater than 90 degrees) and two acute angles.

How do you classify by sides?

Classifying Triangles by Sides

1. If all the sides are equal (the same length) then the triangle is EQUILATERAL.
2. If 2 sides of the triangle are the same length then the triangles is an ISOSCELES triangle.
3. If all three sides of the triangle are a different length then the triangle is a SCALENE triangle.

How do you type an angle symbol?

To insert an angle symbol, type “\degree” (without the quotes) and press “Space.” To write complex equations, use Word’s Equation feature. Click “Insert” and then click the “Equation” button in the Symbols group to insert a new equation.

## What is S in triangle?

There are several ways to compute the area of a triangle. Another is Heron’s formula which gives the area in terms of the three sides of the triangle, specifically, as the square root of the product s(s – a)(s – b)(s – c) where s is the semiperimeter of the triangle, that is, s = (a + b + c)/2. …

What is the classification of this triangle?

Classification of triangles based on their sides. A triangle in which all the sides are equal is called an equilateral triangle. A triangle in which any two sides are equal is called an isosceles triangle. If none of its sides are equal it is called a scalene triangle.