This comprehensive set includes the Octagon and Decagon shapes and is colour coded for easy use. A full set of teachers’ notes is included with many exercises and extension ideas.This 121 piece set contains: 3 Pentagons, 14 Squares, 9 Equilateral Triangles, 3 Hexagons, 44 Rectangles, 10 Right Angle Triangles, 26 Isosceles Triangles, 8 Root 2 Triangles, 2 Octagons, 2 Decagons and a book. Each square piece measures 7.5 x 7.5cm. Age: 6+.