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## Key Concepts

• Different shapes.
• Shapes into categories based on their attributes.

## Shapes

We come across different shapes around us in day-to-day life. So, let us observe the below figure and recall the shapes:

Name the different shapes in the picture given below.

1. Circle
1. Square
1. Rectangle
1. Triangle

Identify the different shapes and count them.

• Number of circles: 4
• Number of triangles: 5
• Number of squares: 3
• Total number of shapes: 12

1. Triangle
1. Pentagon
1. Hexagon

### Triangle & Its Attributes

A triangle has 3 sides and 3 vertices.

Some more different types of triangles are given below:

### Not triangles

These are the shapes which are not triangles.

A quadrilateral has 4 sides and 4 vertices.

Some more different types of quadrilaterals are given below:

These are the shapes which are not quadrilaterals.

## Pentagon, Hexagon & Their Attributes

### Pentagon & its Attributes

• It has 5 sides.
• It has 5 vertices.

### Hexagon & Its Attributes

• It has 6 sides.
• It has 6 vertices.

Not pentagons and not hexagons:

Below are the shapes which are not pentagons and hexagons.

## Exercise

• Name all the shapes used in the picture.
• Observe the picture and find the number of circles, triangles, quadrilaterals, and pentagons.
• Find the total number of triangles in the picture.
• Name each shape. Find the number of sides and vertices.
• Identify the shape which is not a hexagon
• Connect all the dots to make shapes that have vertices. Name the shapes that you make.

### What we have learned

• Recognizing different shapes.
• Sorting shapes into categories of triangle, quadrilateral, pentagon, and hexagon based on their attributes #### Related topics #### Addition and Multiplication Using Counters & Bar-Diagrams

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