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Class 9 (Foundation) - Hindi

Unit 12: Lesson 4

Properties of parallelograms part 1 (Hindi)
Math
Class 9 (Foundation) - Hindi
Quadrilaterals (Hindi)
Properties of parallelograms part 1 (Hindi)
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Proof: Opposite sides of a parallelogram are equal (Hindi)

Google Classroom
Anmol proves that a figure is a parallelogram if and only if opposite sides are congruent.

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Video transcript