Class 6 Maths Understanding Elementary Shapes Polygons

Polygons

A polygon is a plane shape with straight sides. Polygons are 2-dimensional shapes. They are made of straight lines, and the shape is closed i.e. all the lines connect up. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons.

The above figure is a regular polygon.

Problem: Examine whether the following are polygons. If anyone among these is not, say why?

Solution:

(a) As it is not a closed figure, therefore, it is not a polygon.

(b) It is a polygon because it is closed by line segments.

(c) It is not a polygon because it is not made by line segments.

(d) It is not a polygon because it not made only by line segments, it has curved surface also.

Problem: Name each polygon:

Solution:

(a) The given figure is a quadrilateral as this closed figure is made of 4 line segments.

(b) The given figure is a triangle as this closed figure is made of 3 line segments.

(c) The given figure is a pentagon as this closed figure is made of 5 line segments.

(d) The given figure is a octagon as this closed figure is made of 8 line segments.

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