(2x12)-4)=20
* * * * *
Only partially correct. The above is the number of right angles. So the correct answer is 20*90 = 1800 degrees.
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The sum of the interior angles of a dodecagon is:sum = (12 - 2) x 180o= 1800oIn a regular dodecagon, each of the interior angles is 1800o ÷ 12 = 150o
Each interior angle of a regular 12 sided dodecagon measures 150 degrees
The interior angles of a dodecagon sum to 1800 degrees.
A dodecagon
The 12 interior angles of a dodecagon add up to 1800 degrees