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OpenStudy (anonymous):
@hartnn Could you check my answer?
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OpenStudy (acxbox22):
you are right!
OpenStudy (acxbox22):
you can see that the number of triangles made in the shape is 2 less than the number of sides the shape has 18 sides-2=16 triangles 16 x 180=2880 degrees
OpenStudy (anonymous):
Thank you ! :)
OpenStudy (acxbox22):
np ;)
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