decagon
polygon with ten sides and ten angles
A decagon is a polygon with ten straight sides and ten angles. It is a type of regular polygon, meaning that each of its sides and angles is congruent (equal in length/measure) to the others. The interior angles of a decagon add up to 1440 degrees, which can be calculated using the formula (n-2) x 180 degrees, where n is the number of sides.
When drawing a decagon, one method is to start with a circle and divide it into ten equal parts using a compass or protractor. Then, connect each point where the division intersects the circle to create the ten sides.
Decagons can appear in various contexts, such as in architecture, art, and geometry problems. They can also be useful for measuring angles and distances in certain situations, such as in surveying or construction.
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