Geometry (points and lines and shapes, oh my!)

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Across
  1. 3. A five sided figure
  2. 6. A pair of angles whose sum is 90
  3. 7. A pair of angles whose sum is 180
  4. 8. A repeating pattern of figures with no gaps or overlaps
  5. 10. The distance around a circle
  6. 11. Segment of a triangle that has its endpoints a vetex and the midpoint of the opposite side
  7. 13. A quadrilateral with exactly one pair of parallel sides
Down
  1. 1. The same measure
  2. 2. A type of reasoning based on Patterns
  3. 4. Lines that intersect and form right angles
  4. 5. The Longest side of a right triangle
  5. 9. Half a circle
  6. 10. A segment whose endpoints are on a circle
  7. 12. A series of points that extends in two directions without end