These reflected rectangles are example of congruent shapes. When transforming a shape, either through translation, reflection or rotation, a congruent shape is produced. Enlargements create shapes ...

Two identical 2D shapes are said to be congruent. Two 2D shapes that share the same proportions are similar. The angles and side lengths can help us decide which type they are. Some examples of ...

New work on the problem of “scissors congruence” explains when it’s possible to slice up one shape and reassemble it as another. If you have two flat paper shapes and a pair of scissors, can you cut ...