If a straight line falling on two straight lines makes the interior angles on the same side of it, whose sum is 120°, then the two straight lines, if produced indefinitely, meet on the side on which the sum of angles is If a straight line falling on two straight lines makes the interior angles on the same side of it if produced indefinitely meet on the side on which the sum of angles is then the two straight lines whose sum is 120° June 29, 2021 Category: Chapter 5 - Introduction to Euclids Geometry , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related