Geometry

Plane shapes

Triangle

A triangle has three sides and three corners.

The triangle has no diagonal.

 The lengths of the sides of a triangle may or may not be the same.

Place a samosa or any triangular object on a paper. Trace along its boundary till your Pencil reaches the starting point.

Rectangle

A rectangle has four sides and four corners.

The diagonals of a rectangle are of equal length.

The opposite sides of a rectangle are of equal length

Place a card or any rectangular object on a paper. Trace along its boundary till your Pencil reaches the starting point

Square

There are four sides and four corners on a square.

 In a square, each side is the same length.

In a square, the diagonals are all the same length.

Place a chocolate piece or any square object on a paper. Trace along its boundary till your Pencil reaches the starting point

Circle

A circle has no sides and no corners.

Solid shapes

Cone has 2 faces, 1 edge and 1 vertex.

The objects which have a shape of cone are called conical objects like Traffic Cones, Funnel etc,

Cuboid has 6 faces, 12 edges and 8 vertices. The objects which have a shape of cuboid are called cuboidal objects like board, book etc.

Cube has 6 faces, 12 edges and 8 vertices. The objects which have a shape of cube are called cubical objects like box, Dice etc

Sphere has 1 face, no vertex and no edge. The objects which have a shape of sphere are called spherical objects like basketball, globe etc

A cylinder has 3 faces, 2 edges and no vertex. The objects which have a shape of cylinder are called cylindrical objects like candle, cup