Geometry Crossword

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Across
  1. 3. a round solid figure, or its surface, with every point on its surface equidistant from its center.
  2. 5. a triangle having three unequal sides and angles
  3. 7. A shape that adds up to 360 degrees
  4. 8. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point
  5. 9. An angle smaller than 90 degrees
  6. 11. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
  7. 14. a plane figure with at least three straight sides and angles
  8. 16. a flat, two-dimensional surface that extends indefinitely.
  9. 17. A recatangle with four sides of equal length
  10. 18. a plane figure with four straight sides and four right angles, especially one with unequal adjacent sides
Down
  1. 1. four-sided plane rectilinear figure with opposite sides parallel
  2. 2. side side side
  3. 4. A shape with six sides
  4. 5. When you split a shape in half and the two halves are the same.
  5. 6. the perimeter of a circle
  6. 10. Side Angle Side
  7. 12. a plane figure with three straight sides and three angles
  8. 13. an angle of 90 degrees
  9. 15. An angle greater than 90 degrees but less than 180