Two Dimensional Shapes | Learning Concepts
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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.

BLACKBOARD

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.

CIRCLE

Example:

The shapes of the following objects look like a circle.

example of 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.
SEMICIRCLE

Example:

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

example of semi circle shape

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.
OVAL

Example:

The shapes of the following objects look like an oval.

example of oval

Triangle:

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

TRIANGLE

Example:

The shapes of the following objects look like a triangle.

example of semi triangle shape

What Is Square

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

SQUARE

Example:

The shapes of the following objects look like a square.

example of square shape

What Is a Rectangle

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

RECTANGLE

Example:

The shapes of the following objects look like a rectangle.

example of rectangle

Following are some other types of 2-D shapes.

KITE
NEW WORD
egyptian pyramids facts
2D_MINDMAP
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