## What are the 7 ways to classify a triangle?

Right Triangle: A triangle with one right angle.

• Obtuse Triangle: A triangle with one obtuse angle.
• Acute Triangle: A triangle where all three angles are acute.
• Equiangular Triangle: A triangle where all the angles are congruent.
• Isosceles Triangle: A triangle with at least two congruent sides.

What are the classifications of a triangle?

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 3 triangle classifications?

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

How do you classify 5th grade triangles?

Students classify triangles as equilateral (3 equal sides), isosceles (2 equal sides), scalene (all sides have different lengths) or as a right triangle (one angle of 90 degrees).

#### How do you classify triangles by their angles and their sides?

An acute triangle has three angles that each measure less than 90 degrees. Interior angles are the angles inside a figure. An isosceles triangle is a triangle in which exactly two sides are the same length. An obtuse triangle is a triangle with one angle that is greater than 90 degrees.

How do you classify a triangle with side lengths?

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.

## What are the two ways of classifying triangles?

Triangles can be classified either according to their sides or according to their angles. All of each may be of different or the same sizes; any two sides or angles may be of the same size; there may be one distinctive angle.

What are the 8 types of triangles?

Six Types of Triangles

Based on their Sides Based on their Angles
Scalene Triangle Acute Triangle
Isosceles Triangle Obtuse Triangle
Equilateral Triangle Right Triangle

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