A great visual aid for teaching angle measurement and polygons to a large group of students at one time. These six AngLegs ? range in length from 11.5 to 30 cm. Each length is a different color (orange, purple, green, yellow, blue, and red) and snap together easily to form effortlessly manipulated shapes. Set includes two special 6 " SAFE-T Protractors ? that simply snap onto the AngLegs for angle measurement. 26 pieces. Set