ABC's of Geometry

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Across
  1. 4. A polygon with 11 sides
  2. 6. a solid with flat faces
  3. 7. angles opposite each other when two lines cross
  4. 10. The shorter arc joining two points on the circumference of a circle.
  5. 11. When three or more points lie on a straight line.
  6. 12. The point where the three "altitudes" meet.
  7. 14. A line that divides something into two equal parts.
  8. 16. A 4 sided flat shape with straight
  9. 17. The mirror opposite(backwards) of an angle, that is more than 180 degrees, and less than 360
  10. 19. A point where one line crosses another.
  11. 20. The center of a triangle's incircle, where the "angle bisectors" meet.
  12. 21. Where a function equals the value zero (0).
  13. 27. Two or more angles who are adjacent and whose sum adds up to 180 degrees
Down
  1. 1. a point of the x axis were a line hits
  2. 2. Any of the individual surfaces of a solid object.
  3. 3. Two angles whose sum adds up to 180 degrees
  4. 5. A polygon with N(any number) amount of sides
  5. 8. The line where two surfaces meet
  6. 9. a point of the y axis were a line hits
  7. 13. Half of a sphere
  8. 15. A diagram of values, usually shown as lines or bars.
  9. 18. A straight line inside a shape that goes from one corner to another
  10. 22. The distance from the center of a regular polygon to the midpoint of a side
  11. 23. A line that crosses at least two other lines. And forms pairs of consecutive, linear, and supplementary angles
  12. 24. The circle that fits the inside of a polygon.
  13. 25. One of four areas of a graph divided by the x and y axis’
  14. 26. A polyhedron made by two triangles and three trapezoid faces.