00:01:02 NCERT Exercise 6.2 Question 9 ABCD is a trapezium in which AB || DC and its diagonals intersect each other at the point O. Show That AO/CO=BO/DO
00:10:54 NCERT Exercise 6.2 Question 10 The diagonals of a quadrilateral ABCD intersect each other at the point O such that AO/CO=BO/DO. Show that ABCD is a trapezium.
00:19:04 Detailed explanation of similar figures v/s congruent figures
00:27:24 Proof of AAA Similarity Criterion Theorem 6.3 : If in two triangles, corresponding angles are equal, then their corresponding sides are in the same ratio (or proportion) and hence the two triangles are similar.