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Curated OER
What are Equilateral, Isosceles, and Scalene Triangles?
Triangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: right, isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn...
CK-12 Foundation
Ck 12: Elem Math: Overview of Special Triangles
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find missing angles in triangles.
CK-12 Foundation
Ck 12: Elem Math: Overview of Triangle Classifications
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to classify triangles.
Sophia Learning
Sophia: Categorizing Triangles With Congruency
In this video tutorial, triangles are classified as isosceles, equilateral, and scalene by the congruency of their sides. Assess learning with a quiz. [1:52]
Sophia Learning
Sophia: Scalene, Isosceles, and Equilateral Triangle
Explore types of triangles including scalene, isosceles, and equilateral in this video tutorial. [3:47] Quiz to follow to check understanding.
Sophia Learning
Sophia: Scalene Triangles: Lesson 2
After this lesson, you'll be able to pinpoint a scalene triangle based on the fact that no sides or angles in a scalene triangle are congruent. It is 2 of 6 in the series titled "Scalene Triangles."