NCERT Solutions for Class 8 Maths Chapter 3 Understanding Quadrilaterals Ex 3.1

NCERT Solutions for Class 8 Maths Chapter 3 Understanding Quadrilaterals Ex 3.1 are the part of NCERT Solutions for Class 8 Maths (Rationalised Contents). Here you can find the NCERT Solutions for Class 8 Maths Chapter 3 Understanding Quadrilaterals Ex 3.1.

NCERT Solutions for Class 8 Maths Chapter 3 Understanding Quadrilaterals Ex 3.1

Ex 3.1 Class 8 Maths 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

Solution:
(a) Simple curve: (1), (2), (5), (6) and (7) are simple curves.
(b) Simple closed curve: (1), (2), (5), (6) and (7) are simple curves.
(c) Polygon: (1) and (2) are polygons.
(d) Convex polygon: (2) is convex polygon.
(e) Concave polygon: (1) is concave polygon.

Ex 3.1 Class 8 Maths Question 2.

What is a regular polygon? State the name of a regular polygon of
(i) 3 sides (ii) 4 sides (iii) 6 sides

Solution:
A polygon, whose all sides and all angles are equal, is called a regular polygon.
(i) A polygon with 3 sides is called an equilateral triangle.

(ii) A polygon with 4 sides is called a square.

(iii) A polygon with 6 sides is called a regular hexagon.