Voiceover: What is a quadrilateral? A quadrilateral is a four-sided shape where each of the sides are straight and meet at a vertex. It also has four angles — 1, 2, 3, 4.

Quadrilaterals close quadrilateral A polygon with four straight sides. have four sides and four angles. Interior angles in a quadrilateral sum to a full turn (360˚).

Get the latest copy of NCERT Chapter - Quadrilaterals for the current academic session 2021-2022. Download NCERT Class 9 Maths Chapter 8 ... (iv) a pair of opposite sides is equal and parallel ...