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Theorems and problems on parallelograms (view source)

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==Useful websites==

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[http://www.homeschoolmath.net/teaching/g/area_3.php Exercises on area of parallelograms and triangles]

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==Reference Books==

NCERT mathematics- Chapter 9: [http://ncert.nic.in/textbook/pdf/iemh109.pdf#page=1&zoom=auto,-17,728 Areas of parallelograms and triangles]

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