Which figure could be rotated the least amount of degrees to be carried onto itself

Regular octagon.
Regular shapes take the least amount of degrees to rotate on themselves. However, out of all of them, the octagon has the most sides and thus also the least amount of degrees in rotating.

Hope this helps :)

A circle could.
Among the regular polygons, it's the one with the most sides.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

Ineed on quadratic equations to solve problems