Geometry

Two-dimensional shapes

Did you notice that every object around you is of some shape? Some shapes are closed where as some are open.

Did you observe the difference between two shapes?

• Open: Have space in between
• Closed: No gaps in between

A shape is called a two-dimensional shape if it has only two dimensions: length and breadth.

Let us learn the shapes in geometry.

• Circle:It is a closed round figure. It has no lines.

• Triangle:It is a three-sided figure. It is made by joining three straight lines.

• Square:It is a four-sided figure. It is made by joining four straight lines.

• Rectangle:It is also a four-sided figure.



Did you know?

A figure which has 4 sides is called quadrilateral.

Let us learn few names of polygons.

• Pentagon:It is five-sided figure. It is made by joining five straight lines.

• Hexagon:It is a five-sided figure. It is made by joining five straight lines.

• Heptagon:It is a seven-sided figure. It is made by joining seven straight lines.

• Octagon:It is an eight-sided figure. It is made by joining eight straight lines.

• Nonagon:It is a nine-sided figure. It is made by joining nine straight lines.

• Decagon:It is a ten-sided figure. It is made by joining ten straight lines.

New words:

A figure which has 3 or more sides is called polygon.