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 Interactive Checkpoint
 Irregular Polygon:  A polygon whose interior angles are not equal and/or its sides are not equal in length.

Determine if the following figures are irregular polygons.

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Graded Response

 a) an equilateral triangle  a)
 b) a right triangle  b)
 c) a square  c)
 d) a stop sign  d)
 e) the flat side of a ruler  e)