coordinate proof

[jazziza87]

How would I prove that a triangle is similar to another triangle on a coordinate plane if the information given to me states that the vertices of one triangle are multiplied by three to form the other triangle?


thanks!

 

[pka]

Prove that corresponding sides are proportional.
If (a,p) & (b,q) form one side, the corresponding side is (3a,3p) & (3b,3q).
The lengths are:
\(\displaystyle \L
\sqrt {\left( {a - p} \right)^2 + \left( {b - q} \right)^2 } \quad \& \quad \sqrt {\left( {3a - 3p} \right)^2 + \left( {3b - 3q} \right)^2 }\).

 

[pka]

I still don't quite get it could you give me more information.

Do you know what it means for two triangles to be similar?
Tell us at least two ways that one uses to prove two triangles are similar.

 

[jazziza87]

It's okay, I now understand what you told me in the first message, but I have another question this time in Algebra. I forgot the method you would use to solve this equation

6y+7x=90

If you can help me I would really appreciate it

 

[pka]

What do you mean by SOLVE: solve for x or do ypu mean solve for y?
It always best to post the complete question as you were given it.

Next, post a new question in a new topic window.