They are said to be similar but not congruent triangles.
Such triangles are similar.
Sides
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.
To prove two triangles are similar by the SAS (Side-Angle-Side) Similarity Theorem, you need to demonstrate that two sides of one triangle are proportional to two sides of the other triangle, and that the included angles between those sides are congruent. Specifically, if triangle ABC has sides AB and AC proportional to triangle DEF's sides DE and DF, and angle A is congruent to angle D, then the two triangles are similar.
Two triangles are similar if they meet one of the following criteria: (1) the corresponding angles of the triangles are equal (Angle-Angle or AA criterion), (2) the lengths of corresponding sides are proportional (Side-Side-Side or SSS criterion), or (3) two sides of one triangle are proportional to two sides of the other triangle, and the included angles are equal (Side-Angle-Side or SAS criterion). These conditions ensure that the triangles have the same shape, though they may differ in size.
If the 3 sides are proportional by ratio and the angles remain the same then the two triangles are similar
Such triangles are similar.
Yes.
Yes. You can even have two triangles with two pairs of sides that are the SAME measure without the triangles being similar.
similar
three
Sides
If the angles are the same and the sides are proportional by ratio then they are said to be similar triangles.
Two triangles are similar if they meet one of the following criteria: (1) the corresponding angles of the triangles are equal (Angle-Angle or AA criterion), (2) the lengths of corresponding sides are proportional (Side-Side-Side or SSS criterion), or (3) two sides of one triangle are proportional to two sides of the other triangle, and the included angles are equal (Side-Angle-Side or SAS criterion). These conditions ensure that the triangles have the same shape, though they may differ in size.
No- triangles with all angles respectively equal need not be congruent. For example, all equilateral triangles have 3 angles of 60 degrees each but the the sides could be any length. However the sides of such triangles are proportional - such triangles are called similar. They look alike except for their scale.
It is not an axiom, but a theorem.
aa. If the angles are equal and the triangles are right triangles, then all three angles are equal, but the sides can grow or shrink, as long as they remain proportional.