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Q.

A polygon having 10 sides is called?

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a

Octagon

b

Decagon

c

Dodecagon

d

None of these

answer is B.

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Detailed Solution

Concept- The problem given is related to the shape and its name. Remember the names of the different polygons and the number of sides around them.
A polygon is a two-dimensional closed figure composed of straight lines. Triangles, squares, pentagons and hexagons are all examples of polygons. The name indicates the number of sides of the shape. For example, a triangle has three sides and a rectangle has four sides. A shape that can be drawn by connecting three straight lines is called a triangle, and a shape that can be drawn by connecting four straight lines is called a quadrilateral. Polygons with equal side lengths are called regular polygons. Example: All sides of a square are equal. Therefore, it is a regular polygon.

Shape	Number of sides
Triangle	3
Quadrilateral	4
Pentagon	5
Hexagon	6
Heptagon	7
Octagon	8
Nonagon	9
Decagon	10
Undecagon	11
Dodecagon	12

Hence, the correct answer is option 2) .

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A polygon having 10 sides is called?