What is what does congruence means?

Congruence refers to the state of two or more things being identical in shape, size, or measure. In mathematical terms, congruence means that two geometric figures have the same shape and size, and their corresponding angles and sides are equal. For example, congruent triangles have three angles and three sides that match exactly. Congruence is a common concept in geometry and is an important tool for solving problems related to shapes and figures. It is also used in other fields such as physics, engineering, and architecture to ensure that two structures or objects fit together perfectly.