Ex 3.2, 1 (b) - Chapter 3 Class 8 Understanding Quadrilaterals

Last updated at April 16, 2024 by

Ex 3.2, 1 - Chapter 3 Class 8 Understanding Quadrilaterals - Part 2

Ex 3.2, 1 - Chapter 3 Class 8 Understanding Quadrilaterals - Part 3

Transcript

Ex 3.2, 1 Find x in the following figures. (b) Here ABC is a line So, by Linear pair ∠ 1 + ∠ B = 180° ∠ 1 + 90° = 180° ∠ 1 = 180° – 90° ∠ 1 = 90° Thus, our exterior angles are x, 90°, 60°, 90°, 70° We know that Sum of exterior angles = 360° x + 90° + 60° + 90° + 70° = 360° x + 310° = 360° x = 360° − 310° x = 50°

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

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, Social Science, Physics, Chemistry, Computer Science at Teachoo.