4. In Fig 7.25, and
bisect each other at
.
(i) State the three pairs of equal parts in two triangles and
.
(ii) Which of the following statements are true?
i) The three pairs of equal parts in two triangles and
are:
CO = DO (given)
OA = OB (given )
( As opposite angles are equal when two lines intersect.)
ii) So by SAS congruency rule,
that is
Hence, option B is correct.