#[http://http://www.ktbs.kar.nic.in/New/Textbooks/class-x/english/maths/class-x-english-maths-chapter13.pdf Karnataka text book for Class 10, Chapter 13 - Co ordinate geometry]
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#[http://www.ktbs.kar.nic.in/New/Textbooks/class-x/english/maths/class-x-english-maths-chapter13.pdf Karnataka text book for Class 10, Chapter 13 - Co ordinate geometry]
#[http://ncert.nic.in/NCERTS/textbook/textbook.htm?iemh1=3-15 For NCERT book Co ordinate geometry 9th Std Click Here]
#[http://ncert.nic.in/NCERTS/textbook/textbook.htm?iemh1=3-15 For NCERT book Co ordinate geometry 9th Std Click Here]