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Changes
From Karnataka Open Educational Resources
→Useful websites
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=Additional Information=
=Additional Information=
==Useful websites==
==Useful websites==
−1. [[ttp://www.shodor.org/ihnteractivate/discussions/Quadrilaterals/]]
+1. [[http://www.shodor.org/ihnteractivate/discussions/Quadrilaterals/]]
+2. [[http://www.mathopenref.com/quadrilateral.html]]
==Reference Books==
==Reference Books==
