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

Last updated at Aug. 31, 2021 by Teachoo

Last updated at Aug. 31, 2021 by Teachoo

Transcript

Ex 3.3, 2 Consider the following parallelograms. Find the values of the unknowns x, y, z. (ii) Let the parallelogram be ABCD In parallelogram, Adjacent angles are Supplementary ∠A + ∠D = 180° x + 50° = 180° x = 180° − 50° x = 130° ∠C + ∠D = 180° y + 50° = 180° y = 180° − 50° y = 130° Also, Opposite angles of a Parallelogram are equal ∠ABC = ∠ D ∠ ABC = 50° Now, ABO is a line So, by linear pair ∠ ABC + z = 180° 50° + z = 180° z = 180° − 50° z = 130° Therefore, x = 130° , y = 130° and z = 130°

Ex 3.3

Ex 3.3, 1

Ex 3.3, 2 (i) Important

Ex 3.3, 2 (ii) You are here

Ex 3.3, 2 (iii)

Ex 3.3, 2 (iv)

Ex 3.3, 2 (v)

Ex 3.3, 3 (i) Important

Ex 3.3, 3 (ii)

Ex 3.3, 3 (iii)

Ex 3.3, 4

Ex 3.3, 5 Important

Ex 3.3, 6

Ex 3.3, 7

Ex 3.3, 8 (i)

Ex 3.3, 8 (ii)

Ex 3.3, 9 Important

Ex 3.3, 10

Ex 3.3, 11

Ex 3.3, 12 Important

Chapter 3 Class 8 Understanding Quadrilaterals

Serial order wise

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.