Q5 of 33 Page 41

What is a regular polygon?

State the name of a regular polygon of


(i) 3 sides


(ii) 4 sides


(iii) 6 sides

A polygon with regular sides and equal angles is called regular polygon.

Now,


(i) Equilateral Triangle



(ii) Square



(iii) Regular Hexagon



More from this chapter

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3

What is the sum of the measures of the angles of a convex quadrilateral? Will this property hold if the quadrilateral is not convex? (Make a non-convex quadrilateral and try!)

 4

Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that)


What can you say about the angle sum of a convex polygon with number of sides?


A. 7


B. 8


C. 10


D. n

 6

Find the angle measure x in the following figures

A.


B.


C.


D.

7

A. Find x + y + z



B. Find x + y + z + w