Angles of Polygons

Front

What is the formula to calculate the sum of the interior angles of a polygon?

Back

The sum of the interior angles of a polygon with n sides is given by the formula: (n - 2) × 180°.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is 180°.

Front

What is the sum of the interior angles of a quadrilateral?

Back

The sum of the interior angles of a quadrilateral is 360°.

Front

What is the sum of the interior angles of a pentagon?

Back

The sum of the interior angles of a pentagon is 540°.

Front

What is the sum of the interior angles of a hexagon?

Back

The sum of the interior angles of a hexagon is 720°.

Front

What is the sum of the interior angles of an octagon?

Back

The sum of the interior angles of an octagon is 1080°.

Front

What is the sum of the interior angles of a 25-gon?

Back

The sum of the interior angles of a 25-gon is 4140°.

Front

What is the sum of the exterior angles of any polygon?

Back

The sum of the exterior angles of any polygon is always 360°.

Front

If one angle of a triangle is 90°, what can be said about the other two angles?

Back

The other two angles must sum to 90° because the sum of the angles in a triangle is 180°.

Front

What is the relationship between interior and exterior angles of a polygon?

Back

Each interior angle and its corresponding exterior angle sum to 180°.