SSC CGL Geometry - Polygons, Interior and Exterior Angles and Diagonals - Part 1
Channel: Aptitude-Reasoning-Shortcuts-Tips-Tricks
Date: 2016-09-24

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Following properties have been discussed:

We begin the video with a discussion of Polygon, Convex Polygon, Concave Polygon and Regular Polygon. Then we prove that The sum of the interior angles of a polygon is (n - 2) × 180°. After that we prove that each exterior angle of a regular polygon is 360/n degrees, and that the sum of all exterior angles of a regular polygon is 360°. Lastly, we prove that the number of diagonals in a polygon is n(n-3)/2.

These concepts of algebra are targetted  for Bank PO, IBPS PO, SSC CGL, CAT, GMAT and similar exams.

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