Triangle Proportionality Theorem
Move any blue point to observe the proportional segments formed by a parallel side within a triangle.
Jerel L. Welker and Matt James
Lincoln Southwest High School
Lincoln, NE
jwelker@lps.org and mjames2@lps.org
Click the first box. What do you notice about the scale factors? Part to Part.
Click the first box. What do you notice about the scale factors? Part to entire side length.