Geomtry

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Across
  1. 1. A location in space with no dimensions.
  2. 2. A polygon with three sides and three angles.
  3. 4. Theorem: A formula relating the sides of a right triangle.
  4. 7. A parallelogram with four right angles.
  5. 10. Having the same size and shape.
  6. 12. A triangle with all three sides of equal length.
  7. 13. The amount of surface covered by a two-dimensional shape.
  8. 14. A triangle with two sides of equal length.
  9. 15. A one-dimensional geometrical object.
  10. 16. The figure formed by two rays with a common endpoint.
  11. 17. A three-dimensional shape like a ball.
  12. 18. A round, two-dimensional shape.
Down
  1. 1. A quadrilateral with two pairs of parallel sides.
  2. 3. A line segment passing through the center of a circle.
  3. 4. A flat, two-dimensional surface.
  4. 5. The amount of space occupied by a three-dimensional object.
  5. 6. A line segment from the center of a circle to a point on the circle.
  6. 8. A three-dimensional shape with six square faces.
  7. 9. A rectangle with all four sides equal.
  8. 11. The distance around a closed figure.