Ex 3.3, 2 (iv) - Chapter 3 Class 8 Understanding Quadrilaterals

Last updated at April 16, 2024 by

Ex 3.3, 2 - Chapter 3 Class 8 Understanding Quadrilaterals - Part 7

Ex 3.3, 2 - Chapter 3 Class 8 Understanding Quadrilaterals - Part 8

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Ex 3.3, 2 Consider the following parallelograms. Find the values of the unknowns x, y, z. Let the parallelogram be ABCD where ∠ B = 80° We know that, Sum of Adjacent angles of a Parallelogram is 180° ∠A + ∠B = 180° x + 80° = 180° x = 180° − 80° x = 100° Also, Opposite angles of parallelogram are equal ∠B = ∠D y = 80° ∠BCD = ∠A ∠ BCD = x = 100°Now, BCO is a line ∠BCD + ∠ OCD = 180° 100° + z = 180° z = 180° − 100° z = 80° Therefore, x = 100° , y = 80° and z = 80°

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo