Trapezium

Last updated at December 12, 2025 by

Trapezium - Definition with Properties - Class 8 Ganita Prakash - Trapezium

part 2 - Trapezium - Trapezium - Chapter 4 Class 8 - Quadrilaterals (Ganita Prakash) - Class 8 (Ganita Prakash - 1, 2 & Old NCERT)

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TrapeziumTrapezium is a quadrilateral with one pair of opposite sides parallel Here, AB ∥ CD Property of Trapezium Adjacent angles of Trapezium are supplementary i.e. ∠ A + ∠ D = 180° ∠ B + ∠ C = 180° Let’s look at its proof AB ∥ CD and AD is transversal So, ∠ A & ∠ D are angles on same side of transversal ∴ ∠ A + ∠ D = 180° AB ∥ CD and BC is transversal So, ∠ B & ∠ C are angles on same side of transversal ∴ ∠ B + ∠ C = 180° Thus, sum of adjacent angles in trapezium is 180° Sum of Interior angles on same side of transversal is 180 ° Sum of Interior angles on same side of transversal is 180 °

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 15 years. He also provides Accounts Tax GST Training in Delhi, Kerala and online.