144° is the measure of all the ten sides of a decagon. Multiply that number by 10, and you get 1,440° as your final answer. Hope I helped!
* * * * *
No, you did not help! While the answer is correct, it is about a decagon whereas the question was about a dodecagon. The interior angles of a dodecagon sum to (12-2)*180 = 1800 degrees.
The 12 interior angles of a dodecagon add up to 1800 degrees
The exterior angles of a 12 sided dodecagon add up to 360 degrees
A dodecagon is a 12 sided shape that has 12 interior angles that add up to 1800 degrees and 12 exterior angles that add up to 360 degrees
A dodecagon is a 12 sided polygon which can be regular or irregular and its interior angles add up to 1800 degrees
all inside angles of a hexagon add up to 720°
A dodecagon has 12 interior angles that add up to 1800 degrees.
The 12 interior angles of a dodecagon add up to 1800 degrees
The interior angles of a dodecagon add up to 1800 degrees.
The exterior angles of a 12 sided dodecagon add up to 360 degrees
A dodecagon is a 12 sided shape that has 12 interior angles that add up to 1800 degrees and 12 exterior angles that add up to 360 degrees
The 12 interior angles of a dodecagon add up to 1800 degrees
The 12 interior angles of a 12 sided dodecagon add up to 1800 degrees.
The interior angles of a 12 sided dodecagon add up to 1800 degrees
The exterior angles of any polygon add up to 360 degrees.
The 12 interior angles add up to 1800 degrees
Exterior angles add up to 360 degrees Interior angles add up to 1800 degrees
A dodecagon is a 12 sided polygon which can be regular or irregular and its interior angles add up to 1800 degrees