Geometry Vocabulary

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Across
  1. 2. A two-dimensional figure that contains all points on a surface
  2. 3. An angle that measures exactly 90 degrees
  3. 5. Two angles are _____ if they add to 180 degrees
  4. 6. An angle that measures less than 90 degrees
  5. 9. The exact middle point of a line segment
  6. 12. A one-dimensional figure that terminates on both ends
  7. 13. The points that two figures have in common
  8. 15. Two angles that do not share any sides on intersecting lines
  9. 17. A figure made by extending two rays from the same endpoint
  10. 18. A one-dimensional figure that extends forever in one direction
Down
  1. 1. Two angles are _____ if they add to 90 degrees
  2. 4. Two points that are on the same line are ______
  3. 7. Two measurements are the same
  4. 8. A one-dimensional figure that extends forever in both direction
  5. 10. A zero-dimensional figure with no shape or size
  6. 11. Two adjacent angles that form a line together
  7. 14. An angle that measures between 90 and 180 degrees
  8. 16. A line, segment, or ray that cuts a figure into two congruent parts