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Types of Triangles

Videos, stories and songs to teach Grade 3 students the different types of triangles: Equilateral, Isosceles, Scalene

Related Topics: More Grade 3 math Lessons, More Lessons on Triangles, Geometry Worksheets

An Equilateral triangle has three equal sides.
An Isosceles triangle has two equal sides.
A Scalene triangle has no equal sides.

An Acute triangle has three acute angles (less than 90 degrees)
An Obtuse triangle has one obtuse angle (more than 90 degrees)
A Right triangle has one right angle (equals to 90 degrees)

Types of Triangles

Various types of triangles based on sides and angles.
Equilateral, Isosceles, Scalene,
Acute, Obtuse, Right
Classify Triangles Based on Sides and Angles
Learn to classify triangles based on sides and angles.

Types of Triangles
Learn about the different types of triangles including: right, equilateral, isosceles, and scalene. It includes some helpful tips on how to remember the names by looking at the first letter of the triangle name.
Types of Triangles ֠Equilateral, Isosceles, Scalene.

Triangle Song: right, equilateral, isosceles, and scalene triangles.
Classifying Triangles by angles and by length of sides.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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