A regular hexagon has 6 equal interior angles of 120° each, and 6 exterior angles of 60° each.
A regular hexagon has 6 interior angles that are all the same size. Each one measures exactly 120°.
Each exterior angle measures 60°. The 6 exterior angles add up to 360° in total.
At each vertex, the interior angle and the exterior angle always add up to 180°. For the hexagon: 120° + 60° = 180°.
The formula for the sum of interior angles of any polygon is (n − 2) × 180°, where n is the number of sides. For the hexagon:
(6 − 2) × 180° = 4 × 180° = 720°
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