Do you know your geometry as well as your simple math? A decagon is a geometric figure having 10 sides, all equal in lenght that form a "bumpy" outer ring that can be circumscribed by a circle of a definite diameter. The perimeter of the figure would be made by the sum of the 10 equal sides, so the perimeter of any decagon is 10 X length of any one side, or 10 to 1.

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Do you know your geometry as well as your simple math? A decagon is a geometric figure having 10 sides, all equal in lenght that form a "bumpy" outer ring that can be circumscribed by a circle of a definite diameter. The perimeter of the figure would be made by the sum of the 10 equal sides, so the perimeter of any decagon is 10 X length of any one side, or 10 to 1.

Does your math book ask you somewhere later to determine the diameter of the circle that would circumscribe a decagon having sides of 'X' ft. in length, and how much farther you would have to walk around a CIRCLE circumscribing it than just from point to point on the perimeter? Now, that would be kicking you into trigonometry! <G>

P:L::10:1