Sides of a Triangle is one of thousands of math lessons at MathHelp.com.

Sides of a Triangle

We offer a complete lesson on Sides of a Triangle with a personal math teacher.

  • video examples
  • guided practice
  • interactive self tests
  • printable worksheets and more

Lesson Description:

Students learn to classify triangles as scalene (all sides have different lengths), isosceles (at least two sides have the same length), or equilateral (all sides have the same length). Students also learn that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.