This means that one object can be repositioned and reflected (but not resized) so it coincides exactly with the other object. So two distinct plane figures on a piece of paper are congruent if we can cut them out and then match them up completely. Turning the paper over is permitted.
Congruent polygons are polygons that if you fold a regular polygon in half that is a congruent polygon.
References[change | change source]
- Clapham, C.; Nicholson, J. (2009). "Oxford Concise Dictionary of Mathematics, Congruent Figures" (PDF). Addison-Wesley. p. 167. Retrieved September 2013. Check date values in: