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.

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The above figure is a regular polygon.

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

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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:

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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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