Question 603908
so the circle is centered at the origin, with the y-axis as an axis of symmetry for the pentagon


the other vertices are also 10 units from the origin


using radial notation (r,theta) ___ 360º / 5 = 72º
___ the given vertex is (10,90º)
___ the other vertices are ; (10,18º) , (10,162º) , (10,234º) , and (10,306º)


to convert to rectangular coordinates ___ y = r sin(theta) ; and x = r cos(theta)