I use these in a couple ways:
- We have gone on "Right Angle Hunts" where we look carefully at each shape or angle to determine if there is a right angle. My students have also learned the geometry words acute and obtuse. They love sounding so smart using these grown up math words!
- I have also called on students or groups of students to "Find the ____" (trapezoid, rectangle, obtuse triangle, etc.). Once everyone is in their places, they have to discuss as a small group what makes their shape/angle unique and unlike the others in the room. Each group then gets to share about their shape/angle's attributes.