Support the Monkey! Tell All your Friends and Teachers

Help / FAQ




Win a $1000 or more Scholarship to college!


Please Take our User Survey


3.3 Sum of Interior angles of a Polygon

Figure 3.3

Figure 3.3 shows an octagon. Five diagonals can be drawn from A. This gives rise to six triangles.

Since the sum of all internal angles of a triangle is 1800, the sum all the internal angles of this polygon is 6 ´ 1800 = 10800.

This can be generalized as :

For any n sided polygon the sum of its internal angles is
( n - 2 ) ´ 1800.

Index

3. 1 Definition
3. 2 Terminology
3. 3 Sum Of Interior Angles Of A Polygon
3. 4 Sum Of Exterior Angles Of A Polygon
3. 5 Trapezoids
3. 6 Parallelogram
3. 7 Square, Rectangle And Rhombus

Chapter 4

All Contents Copyright © All rights reserved.
Further Distribution Is Strictly Prohibited.


Search:
Keywords:
In Association with Amazon.com