#1 (A.1) - Equilateral Triangle - Hungry, But Don't Come Near Me
#2 (A.2) - Equilateral Triangle Explore - The Great Pyramid, Charlie Brown
#3 (A.3) - Copy an Angle - Don’t Drag - Copy, Copy, Copy!
#4 (A.3) - Bisecting an Angle
#5 (A.4) - Perpendicular Bisectors