Example 21 : is a simple closed curve. Example 21 : is a simple closed curve. July 16, 2021 Category: Chapter 3 - Understanding Quadrilaterals , Chapter 4 - Practical Geometry , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related Example 31 : Three angles of a quadrilateral are 50°, 40° and 123°. Find its fourth angle.67. A polygon is a simple closed curve made up of only __________.1. Given here are some figures. Classify each of them on the basis of the following. (a)Simple curve (b) Simple closed curve (c) Polygon (d) Convex polygon (e) Concave polygon
