Question #7922f
2 Answers
Nov 29, 2017
Yes
Explanation:
Using Pythagorus
For a right angled triangle
conversely if the sum of the squares of
Substitute in what we know
Simplify
Therefore the triangle is a right-angled triangle
Nov 29, 2017
Explanation:
#"using the "color(blue)"converse theorem of Pythagoras"#
#"if the longest side squared is equal to the sum of the "#
#"other two sides squared then it is a right triangle"#
#rArr15^5=225larrcolor(blue)"longest side squared"#
#9^2+12^2=81+144=225#
#"since "15^2=9^2+12^2#
#"then it is a right triangle"#