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.
Virtual Nerd
Virtual Nerd: Find Missing Angles in an Isosceles Triangle Using Right Triangles
Discover how identifying your triangle first can be very helpful in solving for a missing interior angle measurement. [3:40]
Khan Academy
Khan Academy: Triangles: Another Isosceles Example Problem
Review possible angles for an isosceles triangle in this short video.
Khan Academy
Khan Academy: Example Involving an Isosceles Triangle and Parallel Lines
This video demonstrates how to use the triangle sum theorem, properties of isosceles triangles, and special angle pairs formed when parallel lines are cut by a transversal to set up an equation using given algebraic expressions for angle...
Loyola University Chicago
Math Flix: Isosceles Right Triangle
This QuickTime movie provides an opportunity to learn about the characteristics of the isosceles right triangles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Sophia Learning
Sophia: Triangle Exterior Angles Practice
This video lesson demonstrates how to use the triangle exterior angle theorem to find interior angle measurements of a triangle. [4:28]