A triangle is a polygon with three sides and three angles. There are three main types of triangles: equilateral triangles have three equal sides, isosceles triangles have two equal sides, and scalene triangles have no equal sides with all sides being different lengths. The document provides examples and definitions of these three types of triangles.

1. Triangles
All About
www.sudo24.com

2. Vocabulary
www.sudo24.com

3. Triangle
A triangle is a polygon with three sides
and three angles.
Triangles have different names based on
their side lengths and angles.
www.sudo24.com

4. Triangles
Types of
www.sudo24.com

5. Equilateral Triangle
An equilateral triangle
has three equal sides,
meaning all the sides
are the same length.
www.sudo24.com

6. An isosceles triangle
has two equal sides,
or two sides with the
same length.
Isosceles Triangle
www.sudo24.com

7. Scalene Triangle
A scalene triangle has
no equal sides. All the
sides are different
lengths.
www.sudo24.com

8. Let's Practice!
www.sudo24.com

9. Which triangle is scalene?

10. Which triangle is isosceles?
www.sudo24.com