a hexadecagon has 16 sides.
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16 sides polygon have 16 angles
1/16/2013 10:06 pm New York State I'm 5 grade Dear Friend, the math i just learn about shape , but i can explore the answer for you . The different between parallelogram and trapezoid is the parallelogram had 2 pair of parallel ,but trapezoid had 1 pair parallel. It different is it had different how many pair are they. The Parallelogram and trapezoid are the same because it also a parallel line in there shape From, Angelina Nguyen
a octagonal prism
If a square has four sides, each of length four feet, the perimeter of the shape is equal to 4 x 4 = 16 feet.
They add up to 2,520 degrees