The second shortcut that we're going to talk about is side angle side. Geometry: Proofs and Postulates Definitions, Notes, Examples Topics include triangle characteristics, quadrilaterals, circles, midpoints, SAS, and more. But what do side side side mean? It means if all you know is the 3 sides of one triangle are congruent and corresponding to the 3 sides of another triangle, then yes those two triangles must be congruent. There are a couple of shortcuts and we're going to talk about two. Do we always need to know that those 3 angles and those three sides are congruent? And the answer is no. So this is a whole work going on here there's 6 different parts of these two triangles that could be congruent.

And then we can talk about the sides, de will be congruent to ab, bc would be congruent to ef and df would be congruent to ac. Other articles where side-angle-side theorem is discussed: Euclidean geometry: Congruence of triangles: first such theorem is the side-angle-side (SAS). If two triangles are congruent, if I say that triangle abc and triangle def are congruent then that means that all of their corresponding parts are also congruent which means a and d will be congruent angle b and angle e will be congruent, angle c and angle f will be congruent.

Sas postulate definition geometry