Discovering "class-9 - content"
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Opposite side are equal in parallelogram
Quadrilaterals Part-4 Opposite side are equal in parallelogram
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Opposite angles are equal in parallelogram
Quadrilaterals Part-5 Opposite angles are equal in parallelogram
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Diagonal of rhombus are perpendicular
Quadrilaterals Part-7 Diagonal of rhombus are perpendicular
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