Any line is a curve. Line can be straight or bended

Curves are formed by drawing without lifting the pen from the paper

8.jpg

 

Simple Curve

A curve which does not cross itself is a simple curve.

9.jpg

Here,

     (1) & (2) are simple curves

     (3) & (4) are not simple curves

 

Closed Curve

A curve which has no open ends is a closed curve

10.jpg

Here,

    (2) & (4) are closed curves

    (1) & (3) are not closed curves

 

  1. Chapter 3 Class 8 Understanding Quadrilaterals
  2. Concept wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.