Shapes 2-Dimensional Shapes for Class 1 Maths

This discussion is about the most common 2-dimensional shapes present in the surroundings. This concept will help them to identify the shapes with their names.

In this learning concept, the student will learn about

• what is a 2-dimensional shape
• 2 and 3-dimensional shapes
• what is circle
• what is a rectangle
• what is square
• What is an oval

Each concept is explained to class 1 maths students with examples, illustrations and a mind map is added at the end to summarize the idea. Two printable worksheets with solutions of 2-D shapes are attached at the end of the page for the students to practice. Download the worksheet to test your knowledge.

Shapes:

Every day we see different shapes around us. Each shape has different dimensions. A shape can be defined as the form of an object or its outline, outer boundary or outer surface.

Based on the dimensions we can classify shapes as:

1.Two-dimensional shapes (2-D shapes)

2.Three-dimensional shapes (3-D shapes)

 

What Is a 2-Dimensional Shape

 

• 2-D means ‘two-dimensional’.
• 2-D shapes or Two-dimensional shapes are flat plane figures or a shape that has two dimensions.
• 2-D shapes have no thickness.
• To classify 2-D shapes we look sides and corners of the shapes.

 

There are various 2-D shapes.

What Is Circle

A circle is a 2-D shape with one curved side and no corners.

Example:

The shapes of the following objects look like a circle.

 

Semi-circle:

• A 2-D shape that is obtained by dividing a circle into two equal parts.
• Exactly half of a circle.
• A semi-circle has one straight side and one curved side.

Example:

The shapes of the following objects look like a semi-circle.

 

Oval:

• An oval is a 2-D shape that looks like the outline of an egg.
• An oval is a round shape that is elongated rather than perfectly round, as a circle is.

Example:

The shapes of the following objects look like an oval.

 

Triangle:

A triangle is a 2-D shape that has 3 sides and 3 corners.

Example:

The shapes of the following objects look like a triangle.

 

What Is Square

A square is a 2-D shape with 4 sides and 4 corners, and all sides are equal.

Example:

The shapes of the following objects look like a square.

 

What Is a Rectangle

A rectangle is a 2-D shape with 4 sides and 4 corners, and opposite sides are equal.

Example:

The shapes of the following objects look like a rectangle.

Following are some other types of 2-D shapes.