Question

Which pair of triangles is similar?

Answer 1

u know what are similar triangles

Answer 2

If all the angles are equal

Answer 3

so can u find angles

Answer 4

or if u divide length of the side of a big triangle to a length of the side of a small

Answer 5

Similarity of triangles have almost the same postulates as the congruency of triangles.
But, if you have a given image wich already has measures in it, you can take the corresponding sides and calculate their reason of proportionality and see if they all have the same.
Since, we can view similarity of triangles as:
\[\frac{ A'B' }{ AB }=\frac{ B'C' }{ BC }=\frac{ A'C' }{ AC } = k \]
Where "k" is the reason of proportionality.

Answer 6

= k