Philip Carret, who wrote The Art of Speculation (1930), believed âmotiveâ was the test for determining the difference between investment and speculation. âThe man who bought United States Steel at 60 in 1915 in anticipation of selling at a profit is a speculator.
The formula for finding the total measure of all interior angles in a polygon is (âânââ â 2) x 180, where âânââ is the number of sides, as well as the number of angles, the polygon has. Some common polygon total angle measures are as follows: The angles in a triangle (a 3-sided polygon) total 180 degrees.
It is obvious from the figure that the sum of the measures of the interior angles of the octagon is equal to the sum of the interior angles of 6 triangles. As we know that sum of the interior angles of a triangle is #180^@#, the sum of 8 interior angles of octagon will be #6xx180^@=1080^@# Extension. Comparing with this situation we can say that a polygon of n-sides can be divided into #n-2# triangles and thereby the sum of the interior angles of polygon of n-sides will be #=(n-2)xx180 ...