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Learn how to find the sum and each angle of the interior angles of a polygon, such as a triangle, square, pentagon, hexagon, etc. See examples, diagrams, and the general rule for any polygon.
Learn how to calculate angles in polygons using the sum of interior angles formula and the number of triangles created within a polygon. Find out the key relationships between interior and exterior angles and download a free worksheet with questions and answers.
The formula for calculating the size of an interior angle is: interior angle of a polygon = sum of interior angles ÷ number of sides. The sum of exterior angles of a polygon is 360°.
Learn how to calculate the sum of interior and exterior angles of any polygon using triangles and formulas. Watch video lessons and solve problems with step-by-step solutions.
In this Maths article, learn how to use a formula to find out the internal angles within a polygon.
Learn how to calculate the interior and exterior angles of polygons using formulas and examples. Find the measure of a single angle of a regular polygon with n sides and the sum of n angles of a convex polygon.
Learn about polygons, 2-dimensional shapes with straight sides and angles. Find out how to name, classify and measure polygons, and see examples and interactive activities.
