Geometry Terms Crossword Puzzle

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Across
  1. 2. Coplanar lines that have no points in common (2 words)
  2. 5. Endpoints and all points between (2 words)
  3. 6. Two adjacent angles whose sum is 180° (2 words)
  4. 7. A triangle that has a right angle (2 words)
  5. 9. A triangle that has 3 acute angles (2 words)
  6. 12. The pair of opposite angles when 2 lines (2 words) intersect
  7. 14. A set of points all of which lie on the same straight line
  8. 15. A set of points
Down
  1. 1. A set of points that form a flat surface
  2. 3. Two angles whose sum is 180° (2 words)
  3. 4. Two angles whose sum is 90° (2 words)
  4. 8. A ray that divides an angle into two congruent angles (2 words)
  5. 10. Having the same measure
  6. 11. A line that is perpendicular to the line segment at its midpoint (2 words)
  7. 13. Set of points that is the union of two rays having the same endpoint