20. Shapes, Constructions & Nets

20.1 Basic Geometrical Terms
20.2 Types of Angles
20.3 Types of Triangles
20.4 Types of Quadrilaterals
20.5 Regular and Irregular Polygons
20.6 Three-Dimensional Solids
20.7 Measuring and Drawing Lines
20.8 Measuring and Drawing Angles
20.9 Constructing a Triangle with Ruler and Compasses
20.10 Nets of 3D Shapes