ABCD is a trapezium in which AB is parallel to DC and its diagonals intersect each other at point O .Show that AO/BO=CO/DO

Answer 1

google is your friend. Go to

http://www.authorstream.com/Presentation/ramarao.velury-1400926-7similartriangles-rev1/

and skip to page 12. The problem is explained.

Answer 2

Answer