Geometry

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Across
  1. 5. A polygon with three sides.
  2. 6. A closed shape with all points equidistant from the center.
  3. 8. A point where two or more line segments meet.
  4. 9. A polygon with four sides.
Down
  1. 1. The distance around the outside of a shape.
  2. 2. The space inside a shape.
  3. 3. Balance or reflection in a shape that creates identical halves.
  4. 4. A figure formed by two rays or line segments that share a common endpoint.
  5. 7. A closed figure with straight sides.