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  1. Chapter 5 Class 6 Understanding Elementary Shapes
  2. Concept wise
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One pair of parallel sides AB ∥ CD Two pairs of parallel lines AB ∥ CD AD ∥ BC Opposite two sides are equal AB = CD AD = BC Parallelogram with all sides equal & all 4 angles 90° So, AB ∥ CD & AD ∥ BC AB = BC = CD = AD ∠A = ∠B = ∠C = ∠D = 90° Parallelogram with all sides equal & all 4 angles 90° So, AB ∥ CD & AD ∥ BC AB = CD = AD = BC ∠A = ∠B = ∠C = ∠D = 90° Parallelogram with all sides equal & all 4 angles 90° So, AB ∥ CD & AD ∥ BC AB = BC = CD = AD ∠A = ∠B = ∠C = ∠D = 90°

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.