similar triangles

[defeated_soldier]

how do i prove two triangles are similar ?

suppose, i proved two triangles have same corresponding angles ....can i call these two triangles are similar ?

OR do i have to prove that its corresponding sides also have same ratio .


do i have to prove BOTH or any one of the above is sufficient ?

 

[Denis]

Are you too tired or busy to do a http://www.google.com search on "similar triangles"?

Here: http://www.gcseguide.co.uk/similar_triangles.htm