What makes two figures congruent?
Two figures are congruent to one another when they both have the exact same shape and size. This means that every side on figure A will have a matching side on figure B that is the same size and that every angle on figure A will have a matching angle on figure B. The two figures will have the same size and shape, but may be in a different position (for example, one might be flipped horizontally or vertically).