# Ex 6.3, 1 (vi) - Chapter 6 Class 7 Triangle and its Properties

Last updated at Sept. 3, 2021 by Teachoo

Last updated at Sept. 3, 2021 by Teachoo

Transcript

Ex 6.3, 1 (vi) Find the value of the unknown x in the following diagrams: Given, ∠X = 2x , ∠Y = 90°, ∠Z = x We know, Sum of angles in triangles = 180° ∠X + ∠Y + ∠Z = 180° 2x + 90° + x = 180° 3x + 90° = 180° 3x = 180° − 90° 3x = 90° x = (90°)/3 x = 30°

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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.