__CHAPTER 10 VISUALISING SOLID SHAPES__2-D SHAPES

When a solid object has only two measurements it is called a 2 dimensional shape.

3-D SHAPES

When a solid object has three measurements- length, breadth and depth, it is called a 3 dimensional shape.

3D shapes objects have a different views from different positions

MAP

A map depicts the location of a particular object in relation to other objects.

POLYHEDRON

A polyhedron is a solid made up of polygonal regions called faces. These faces meet at edges and edges meet at vertices. For any polyhedron,

F + V – E = 2

Where ‘F’ stands for the number of faces, V is the number of vertices and E stands for number of edges. This is Euler’s formula.