Exercise 3.1 (Revised) - Chapter 3 - Understanding Quadrilaterals - Ncert Solutions class 8 - Maths

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NCERT Solutions for Class 8 Maths Chapter 3 - Understanding Quadrilaterals

Ex 3.1 Question 1.

Given here are some figures: 

Classify each of them on the basis of the following:
(a) Simple curve
(b) Simple closed curve
(c) Polygon
(d) Convex polygon
(e) Concave polygon

Answer.

(a) Simple curve

 (b) Simple closed curve 

(c) Polygons 

(d) Convex polygons 

(e) Concave polygon 

Ex 3.1 Question 2.

What is a regular polygon? State the name of a regular polygon of:
(a) 3 sides
(b) 4 sides

(c) 6 sides

Answer.

A regular polygon: A polygon having all sides of equal length and the interior angles of equal size is known as regular polygon.
(i) 3 sides

Polygon having three sides is called a triangle.
(ii) 4 sides

Polygon having four sides is called a quadrilateral.
(iii) 6 sides

Polygon having six sides is called a hexagon.