What does congruent mean in math?

Congruent refers to two things being the same exact shape and measure. For example, if two angles are congruent, the degrees of each angle are identical.

While the size and shape of two congruent objects are equal, their orientations may be different. The ability to recognize congruence is important in geometry and other fields that rely on this type of math. For example, designers often seek out the congruence between two objects to ensure symmetry in the final product. Engineers and manufacturers may also manipulate the congruency of two shapes to create something unique by changing the position of the shapes.