# Prove that a triangle is right angled triangle

• December 15th 2009, 08:18 AM
jiripo
Prove that a triangle is right angled triangle
How can I prove that the triangle ABC is a right angled triangle for any value x if the sides are AC = 12x +24, AB=13x +26 and
BC=5x +10. Thanks.
• December 15th 2009, 12:35 PM
Lucio Carvalho
help for the exercise
Hello ,
In annexe, I show you my point of view about the exercise.
I hope you understand.
Bye!
• December 15th 2009, 12:38 PM
Isomorphism
Quote:

Originally Posted by jiripo
How can I prove that the triangle ABC is a right angled triangle for any value x if the sides are AC = 12x +24, AB=13x +26 and
BC=5x +10. Thanks.

I have edited your question. The answer can be obtained by using Pythogorus theorem.

Try to show that $AC^2 + BC ^2 = AB ^2$.