Geometry Crossword

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Across
  1. 2. a triangles center of gravity
  2. 3. two angles that add up to equal 180 degrees
  3. 4. a dot with no size in a specific location
  4. 6. a horizontal line is
  5. 8. points on the same plane
  6. 11. two rays connected at an end point, or vertex
  7. 12. point where two lines, line segment, or rays meet
  8. 14. a figure with no thickness that extends forever in opposite directions
  9. 16. when an angle is cut in half
  10. 18. 2 angles that share a vertex and have a common side
  11. 19. points on the same line
  12. 20. a line that rises from left to right is
  13. 21. a line that falls from left to right is
  14. 22. a flat surface that extends forever in all directions
Down
  1. 1. triangle with the same shape but different size
  2. 2. triangle with the same shape and size
  3. 4. when lines have opposite reciprocal slopes, they are
  4. 5. two angles that add up to equal 90 degrees
  5. 7. center of a inscribed triangle
  6. 8. center of a circumscribed triangle
  7. 9. a part of a line that extends forever in one direction and has an end point
  8. 10. 2 opposite angles that share a vertex
  9. 13. 2 angels that form a line
  10. 15. a vertical line is
  11. 17. a point directly in the middle of two points
  12. 22. when lines have the same slope but a different y axis, they are