A regular polygon is a closed figure
All its angles are equal in measure.
and all its sides are congruent
<span>A common factor is a factor of 2 or more numbers.
the factors of 12 are: 1,2,3,4,6,12
the factors of 21 are: 1,3,7,21
1 and 3 are both common factors of 12 and 21.</span>
9+(-6) I think that this might work.
go on weegy its like this an you should find your answer there
