Yes.
They are said to be similar but not congruent triangles.
Such triangles are similar.
If the 3 sides are proportional by ratio and the angles remain the same then the two triangles are similar
Yes, the corresponding sides of similar triangles have proportional lengths. This means that the ratios of the lengths of corresponding sides are equal. For example, if two triangles are similar, the ratio of the lengths of one triangle's sides to the lengths of the other triangle's corresponding sides will be the same across all three pairs of sides. This property is fundamental in solving problems related to similar triangles.
angles
proportional
Yes. You can even have two triangles with two pairs of sides that are the SAME measure without the triangles being similar.
similar
Proportional.
three
Sides
angles are congruent. That is sufficient to force the corresponding sides to be proportional - which is the other definition of similarity.