(a) Two line segment are said to be congruent,
if both lines have equal length.
(b) Two squares
It two square are said to be congruent there
these squares have equal sides. All squares
are similar. If sides are equal then only
we can say that squares are congruent.
(c)Two rectangles:
They are congruent since they have same
length and breadth.
(d)Two circles:
If two circles are said to be congruent,
then these circles have same measurement
The measurement may be radius, diameter
and circumference. All circles are similar,
but all circles are not congruent. circles
with equal radius, or equal diameter
or equal circumference are said to be
congruent.