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From Karnataka Open Educational Resources
→Useful websites
# http://www.mathopenref.com/quadrilateral.html : Simple explanation about quadrilaterals.
# http://www.mathopenref.com/quadrilateral.html : Simple explanation about quadrilaterals.
# http://www.slideshare.net/muzzu1999/types-of-quadrilaterals-and-its-properties-group-4 : This website has a very good activity on properties of quadrilaterals.
# http://www.slideshare.net/muzzu1999/types-of-quadrilaterals-and-its-properties-group-4 : This website has a very good activity on properties of quadrilaterals.
# http://www.cimt.plymouth.ac.uk/projects/mepres/book8/bk8i1/bk8_1i3.htm This is a very good website for students to understand classification of quadrilaterals as per their properties. The activity is given in the form of a flow chart.
# http://www.cimt.plymouth.ac.uk/projects/mepres/book8/bk8i1/bk8_1i3.htm This is a very good website for students to understand classification of quadrilaterals as per their properties.
==Reference Books==
==Reference Books==
