Check sibling questions

Example 5 - Chapter 6 Class 7 Triangle and its Properties

Last updated at March 30, 2023 by

Example 5 - Determine whether the triangle whose lengths of sides

Example 5 - Chapter 6 Class 7 Triangle and its Properties - Part 2

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

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

Transcript

Example 5 Determine whether the triangle whose lengths of sides are 3 cm, 4 cm, 5 cm is a right-angled triangle. We know that, Hypotenuse is the largest side. So, Hypotenuse = 5 cm Checking Pythagoras theorem, γ€–(π»π‘¦π‘π‘œπ‘‘π‘’π‘›π‘’π‘ π‘’)γ€—^2 = γ€–(π΅π‘Žπ‘ π‘’)γ€—^2 + γ€–(π‘ƒπ‘’π‘Ÿπ‘π‘’π‘›π‘‘π‘–π‘π‘’π‘™π‘Žπ‘Ÿ)γ€—^2 γ€–(π»π‘¦π‘π‘œπ‘‘π‘’π‘›π‘’π‘ π‘’)γ€—^2 = γ€–(5)γ€—^2 = 25 γ€–(π΅π‘Žπ‘ π‘’)γ€—^2 " + " γ€–(π‘ƒπ‘’π‘Ÿπ‘π‘’π‘›π‘‘π‘–π‘π‘’π‘™π‘Žπ‘Ÿ)γ€—^2 = γ€–(3)γ€—^2 + γ€–(4)γ€—^2 = 9 + 16 = 25 Since, L.H.S = R.H.S Pythagoras theorem is satisfied Hence, 3cm, 4cm, 5cm form sides of a right angled triangle. Since, L.H.S = R.H.S Pythagoras theorem is satisfied Hence, 3cm, 4cm, 5cm form sides of a right angled triangle. Since, L.H.S = R.H.S Pythagoras theorem is satisfied Hence, 3cm, 4cm, 5cm form sides of a right angled triangle.

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.