Sophia Learning
Sophia: Triangle Proportionality Theorem: Lesson 2
This lesson presents how to apply the triangle proportionality theorem to solve for unknown variables and side lengths. It is 2 of 6 in the series titled "Triangle Proportionality Theorem."
Loyola University Chicago
Math Flix: Extended Response: Similar Figures Proportion
This QuickTime movie explains the solution for a geometry problem working with proportion that requires an extended response. The teacher and student discuss how to work through it together to find the solution. As you watch and listen...