Geometry: Interior and Exterior Angles of Polygons
This is a free lesson from our course in Geometry
This lesson explains about the properties and relationship of angles of polygons in general and particularly of Interior and Exterior angles of Polygon. The presentation covering such content will be done by the instructor in own handwriting, using video and with the help of several examples with solution.
Any polygon, regular or irregular, simple or self-intersecting, has as many corners as its sides. Each corner has several angles. The two adjacent sides and the vertex of polygon define an angle. The measure of an angle refers to the amount of rotation needed such that one of the line segments should superimpose onto the other. More often when the angles of a polygon are referred, it would mean interior angles. (More text below video...)
<h2> Interior and Exterior Angles of Polygons - Watch video (Geometry)</h2> <p> line, degree, angle, triangle, square, measure, number, sides, polygon, isosceles, quadrilateral, rectangle, pentagon, adjacent side, right triangle, hexagon, interior angles, exterior angles, regular polygon, interior angle sum theorem, geometry tutorials, exterior angle sum theorem, quizzes</p> <p> It explains how to find sum of all the interior angles and exterior angles of a polygon.</p>
Other useful lessons:
Classifying Polygons
(Continued from above) You may notice the important property of polygons: all polygons with the same number of sides have the same sum of interior angles. For example: if you add the three interior angles of any triangle (3 side polygon), it’ll result up to 180°. Similarly four angles of any quadrilateral (4 side polygon) will add up to 360°, and for pentagon it will be 540°. When you walk through some practice exercises; would learn that for the polygon with 3 sides, sum of interior angles is 180°. For every additional side than three, 180 degrees is added to the sum. E.g. the sum of interior angles of quadrilateral shall be (180 + 180) = 360°.
Winpossible's online math courses and tutorials have gained rapidly popularity since their launch in 2008. Over 100,000 students have benefited from Winpossible's courses... these courses in conjunction with free unlimited homework help serve as a very effective math-tutor for our students.
- All of the Winpossible math tutorials have been designed by top-notch instructors and offer a comprehensive and rigorous math review of that topic.
- We guarantee that any student who studies with Winpossible, will get a firm grasp of the associated problem-solving techniques. Each course has our instructors providing step-by-step solutions to a wide variety of problems, completely demystifying the problem-solving process!
- Winpossible courses have been used by students for help with homework and by homeschoolers.
- Several teachers use Winpossible courses at schools as a supplement for in-class instruction. They also use our course structure to develop course worksheets.
 Copyright © Winpossible, 2010 - 2011
Best viewed in 1024x768 & IE 5.0 or later version