Check sibling questions

Ex 14.3, 7 - Chapter 14 Class 7 Symmetry

Last updated at March 16, 2023 by

Slide57.JPG

Slide58.JPG

Get live Maths 1-on-1 Classs - Class 6 to 12

Book 30 minute class for β‚Ή 499 β‚Ή 299

Transcript

Ex 14.3, 7 Can we have a rotational symmetry of order more than 1 whose angle of rotation is (i) 45Β°? Order of rotational symmetry = (360Β°)/(𝐴𝑛𝑔𝑙𝑒 π‘œπ‘“ π‘ π‘¦π‘šπ‘šπ‘’π‘‘π‘Ÿπ‘¦) = (360Β°)/(45Β°) = (72Β°)/9 Since, order of rotational symmetry is an integer Hence it is possible Ex 14.3, 7 Can we have a rotational symmetry of order more than 1 whose angle of rotation is (ii) 17Β°?Order of rotational symmetry = (360Β°)/(𝐴𝑛𝑔𝑙𝑒 π‘œπ‘“ π‘Ÿπ‘œπ‘‘π‘Žπ‘‘π‘–π‘œπ‘›π‘ ) = (360Β°)/(17Β°) = 21 (3Β°)/17 Since, order of rotational symmetry is in fraction This is not possible

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 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.