Proving Tri's Congruent (I)
Recall an isometry is a transformation that preserves distance.
Also recall that, by definition, 2 polygons are said to be congruent polygons if and only if one polygon can be mapped perfectly onto the other polygon using an isometry or a composition of two or more isometries.
Use the tools of GeoGebra to show, by definition, that the following two triangles are congruent.