Two Dimensional Shapes | Learning Concepts
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Shapes

Two-dimensional Shapes

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.

G1_1_2D_BLACKBOARD.png

Based on the dimensions we can classify shapes as:

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

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

Two-dimensional Shapes (2-D Shapes)


  • 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.

1.Circle:

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

G1_2_2D_CIRCLE.png

Example:

The shapes of the following objects look like a circle.

G1_3_2D_COIN.png

2.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.
G1_4_2D_SEMICIRCLE.png

Example:

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

G1_5_2D_HANDFAN.png

3.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.
G1_6_2D_OVAL.png

Example:

The shapes of the following objects look like an oval.

G1_7_2D_EGG.png

4.Triangle:

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

G1_8_2D_TRIANGLE.png

Example:

The shapes of the following objects look like a triangle.

G1_9_2D_TRAFFIC SIGNAL.png

5. Square

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

G1_10_2D_SQUARE.png

Example:

The shapes of the following objects look like a square.

G1_11_2D_WATCH.png

6. Rectangle

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

G1_12_2D_RECTANGLE.png

Example:

The shapes of the following objects look like a rectangle.

G1_13_2D_DOOR.png

Following are some other types of 2-D shapes.

G1_14_2D_KITE.png
G1_15_2D_NEW WORD.png
G1_16_2D_DID YOU KNOW.png
G1_17_2D_MINDMAP.png
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