Analyzing Triangle Congruence with AngLegs

I've tried to explain why AngLegs are a must have for high school geometry and should not only be considered a tool for younger students. Here is an example of how I find them indispensable in teaching triangle congruence. This lesson is adapted from MARS: Evaluating Conditions for Congruency. "Ok class, you are sitting in pairs and at … Continue reading Analyzing Triangle Congruence with AngLegs


Day 44: Triangle Side-Angle Relationship

We analyzed the relationship between sides and angles within triangles using my fun AngLegs and developed conclusions as a class. I noticed this student has some errors in her notes & practice. We will be reviewing these conclusions and correcting any misconceptions tomorrow at the start of class. Unplanned but awesome: some students noticed that … Continue reading Day 44: Triangle Side-Angle Relationship