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The 12 interior angles of a 12 sided dodecagon add up to 1800 degrees.
Its 12 interior angles add up to 1800 degrees
Exterior angle: 12 degrees Interior angle: 168 degrees
The interior angles of a 12 sided dodecagon add up to 1800 degrees
The measure of each interior angle of a dodecagon, which is a 12 sided regular polygon, is 150o. This is found in any polygon by multiplying 2 less than the number of sides by 180o and then dividing the product by the number of sides. A dodecagon interior angle is then 10 x 180o/12 = 150o.