The interior angles will sum to 180*(13-2)= 1980 degree
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A 13 sided polygon also called a triskaidecagon or tridecaogn has a total 1980 degrees for its interior angles.
The 13 interior angles of a 13 sided polygon add up to 1,980 degrees
A 13 sided polygon interior angles add up to 1980 degrees.
The interior angle of a 13 sided polygon can have any value between 0 and 360 degrees.
1980 degrees.