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Subject – Mathematics


                                              Chapter 7 – GEOMETRY


               Sub-topic 8 : 2D AND 3D SHAPES

               Shapes are of two types –i) 2D-shapes

                                                        ii) 3D-shapes

               2D-shapes:


                     It has 2 dimensions that is length and breadth.
                     They are also called as flat shapes.
                     Ex- Rectangle, square, triangles etc.

                   Square- A square has 4 sides and 4 vertices.

                   Rectangle- A rectangle has 4 sides and 4 vertices.


                   Triangle- A triangle has 3 sides and 3 vertices.

                   Circle- A circle has no sides and no vertices.

                   3D- Shapes:


                     It has 3 dimensions that is length, breadth and height.
                     They are also known as solid shapes.
                     Ex- Cube, cuboid, sphere and cone etc.

                   Cuboid- A cuboid has 6 faces, 12 edges and 8 vertices.

















                   Cube- A cube has 6 faces,12 edges  and 8 vertices.
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