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.
Calculating the number of sides in a regular polygon, given the interior angle. We already know the following facts about polygons: 1  The interior and exterior angles add up to 180Â° (a straight line - eg, a + f = 180Â°), and.  The sum of the exterior angles is 360Â° (a + b + c + d + e = 360Â°).