- Congruency
Two objects identical in shape and size are said to be congruent. In geometry,
congruency refers to two figures with the corresponding sides and angles identical.
Also the difference between two-congruency and similarity must be explained to the
child.
Two identical triangles in terms of corresponding angles and sides be given to the
child and be asked to explore the magnitudes of their sides and angles. On verification,
the child is able to conceptualize that the two triangles are identical in sides and
angles and hence they are congruent.
Here the corresponding sides and angles of the two triangles are identical and hence
Δ ABC ≡ Δ PQR
A
BC
P
Q R
