NUMBEROCK
Triangles
Skateboards, mountain climbing, billiards' Don't you just love this stuff? That's why NUMBEROCK put it all into this song about triangles that is filled with real-world connections. Triangles are all around us, so it is easy to make this...
Scholastic
Study Jams! Classify Triangles
Jam on with this multi-faceted activity teaching triangle classification. Start with a learner-paced lesson describing the different qualities of triangles and follow with a fun karaoke session. Also provided are two types...
Math Antics
Triangles
What has three sides and is adorable? A-cute triangle. The resource introduces triangles and how to classify them by sides and angles or both. The video concludes with using the sum of the angles of a triangle to show how to solve for a...
Curated OER
What is a Triangle?
Triangles, triangles, triangles. What makes a polygon a triangle? How many types of triangles are there? How do you determine what kind of triangle it is? Watch this video as the teacher explains 'tri' meaning three, making a triangle -...
Curated OER
How Do You Classify 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: isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn about...
Sophia Learning
Sophia: Scalene Triangles: Lesson 4
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 4 of 6 in the series titled "Scalene Triangles."
Virtual Nerd
Virtual Nerd: What Is a Triangle?
This tutorial explains triangles and their different types. [5:58]
Virtual Nerd
Virtual Nerd: How Do You Classify Triangles?
If you know what kind of triangle you're looking at, it's much easier to figure out how to solve for various sides and angles. Use this tutorial to practice classifying triangles. [7:15]
Virtual Nerd
Virtual Nerd: How Do You Classify Triangles?
This tutorial provides practice in classifying triangles which is useful when figuring out how to solve for various sides and angles. [7:15]
Math Antics
Math Antics: Triangles
Gain a basic understanding of triangles by watching easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [7:39]
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."