1) What is the circumference of a circle? 2) What is the diameter of a cirlce? 3) What is the total sum of the interior angles of a pentagon? 4) Which polygon has a sum of interior angles equal to 360°? 5) What polygon has sum of interior angle 360? 6) How many axes of symmetry does a regular hexagon have? 7) Find the value of x. 8) Find the sum of the interior angles of a polygon with 13 sides.  9) Find the measure of one interior angle of a regular nonagon. 10) Four interior angles in a pentagon are each 115. Find the size of the other angle.

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