The INTERIOR angles of an k-sided polygon add up to (k-2)*180 degrees.
Here k = 16 so the sum is (16-2)*180 = 2520 degrees.
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what is a 16 sided shape called
The interior angles of a 16 sided polygon add up to 2520 degrees If it's a regular polygon then each interior angle measures 157.5 degrees
All I can tell you is that a 16 sided shape is called a Hexadecagon
2520
A "hexadecagon" is a 16-sided polygon.