+75
In the following 9-star, find the sum of the angles ∠A+∠B+∠C+∠D+∠E+∠F+∠G+∠H+∠I
+2668 Use the formula to find the sum of all the angles in a polygon with s sides.
+2668 Use the formula to find the sum of all the angles in a polygon with s sides.
