How To Tell If 2 Triangles Are Congruent. So if you have two triangles and you can transform for example by reflection one of them into the other while preserving the scale the two triangles are congruent. Basically triangles are congruent when they have the same shape and size.
Sss side side side sss stands for side side side and means that we have two triangles with all three sides equal. Basically triangles are congruent when they have the same shape and size. When the sides are the same then the triangles are congruent.
So if you have two triangles and you can transform for example by reflection one of them into the other while preserving the scale the two triangles are congruent.
The equal sides and angles may not be in the same position if there is a turn or a flip but they are there. Angle side angle is a rule used to prove whether a given set of triangles are congruent. Sss sas asa aas and hl. Sas side angle side if any two sides and the angle included between the sides of one triangle are equivalent to the corresponding two sides and the angle between the sides of the second triangle then the two other triangles are known to be congruent by sas rule.