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How do you work out the angle sum of any polygon?
The sum of the interior angles (the angles of a polygon is equal to the 180*(n-2), where n is the number of sides. For example, if a polygon has 5 sides the sum of the angles is 180*(5-2), which is 540 degrees. The sum of the exterior angles (the angles on the outside of the polygon made by extending a side and measuring the angle between the extension and the nearest side) is always equal to 360 degrees.
What is a polygon which all angles are congruent?
It is simply a polygon with all equal angles. It is not a regular polygon - if that is what you are looking for.
What is a polygon with all interior angles congruent?
A polygon with all interior angles congruent Is known as a regular polygon.
How many angles would a polygon with 10 sides have?
A polygon has as many angles as sides, so a polygon with 10 sides (decagon) would have 10 angles.
What do the angles outside a pentagon add up to?
The exterior angles of a pentagon, or of any polygon, add to 360 degrees. Note, however, that exterior angles are not the same as the angles outside. One would think that each pair of interior and exterior angles add to 360 degrees. Instead, they sum to 180.
