How to find the degree of an angle with an equation

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To calculate the angles inside a polygon, first count the number of interior angles. A polygon has the same number of interior angles as sides.

For example, a triangle always has 3 angles, while a square or rectangle always has 4, and so on. Next, use the formula (n – 2) x 180 to find the total number of degrees of all the interior angles combined. In this formula, n is equal to the number of interior angles.

So, a triangle would have (3 – 2) x 180 degrees, or 180 degrees total. On the other hand, a quadrilateral, such as a square or a rectangle, would have (4 – 2) x 180 degrees, or a total of 360 degrees.

How to solve geometry problems involving angles

If the polygon is regular—that is, if all the sides are the same length—then all you have to do is divide the total number of degrees of all the interior angles by the number of sides in the polygon. For instance, to calculate the angles in a regular pentagon, divide 540 degrees by 5 to get 108.

Each angle in the pentagon is 108 degrees. If the polygon has irregular sides, your job is a little trickier. If you know all the angles in the

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