Definition: Congruously, a concept in mathematics and geometry, it refers to a mathematical system where all quantities are expressed in terms of a single unit or scale. The concept is based on the idea that every object has a specific size or shape, which can be measured by a single unit. In other words, if you have two objects with different sizes, they will be congruent if their measurements (or lengths) match exactly. This means that the units of measurement used in the calculation of the sizes