Congruent "suitable, proper," from L. congruentem (nominative congruens) "agreeing, fit, suitable," p.p. of congruere, literally "to come together, agree, correspond with," from → com- "with" + a lost verb *gruere, *ruere "fall, rush."
Damsâz "agreeing, consenting, harmonious," maybe from hamsâz "unanimous," → compatible.
Fr.: angles congrus
Two angles if they have the same measure. Congruent angles may lie in different orientations or positions.
Fr.: cercles congrus
Two circles if they have the same size.
congruent line segments
Fr.: segments congru
Two line segments if they have the same length. They need not lie at the same angle or position on the plane.
Fr.: nombre congru
Fr.: polygones congrus
Polygons that have an equal number of sides, and all the corresponding sides and angles are congruent. However, they can be in a different location, rotated or flipped over.
Fr.: triangles congrus
Two triangles when all corresponding sides and interior angles have the same measure. The triangles will have the same shape and size, but one may be a mirror image of the other.