CBSE Class 7 Maths | Chapter 7 Congruence Of Triangles
* If two line segments have the same (i.e, equal) length, they are congruent. Also, if two line segments are congruent, they have the same length.
* If two angles have the same measure, they are congruent .Also, if two angles are congruent, their measures are same.
* Two triangles are congruent if they are copies of each other and when superposed, they cover each other exactly.