Geometry Unit 1

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Across
  1. 4. A line, ray, or segment that is perpendicular to a segment and passes through its midpoint.
  2. 6. A location in space with no size or shape.
  3. 7. Angles with the same measure.
  4. 8. Points that lie on the same plane.
  5. 10. A part of a line that begins at an endpoint and extends infinitely in one direction.
  6. 11. A flat surface that extends infinitely in all directions.
  7. 12. Points that do not lie on the same plane.
  8. 13. Two lines that intersect to form right angles (90°).
  9. 14. A formula used to find the distance between two points on a coordinate plane.
  10. 16. An angle measuring less than 90°.
  11. 20. An angle measuring greater than 90° and less than 180°.
  12. 21. If point D is in the interior of ∠ABC, then m∠ABD+m∠DBC=m∠ABC
  13. 23. Opposite angles formed by two intersecting lines.
  14. 24. A line, ray, segment, or plane that intersects a segment at its midpoint.
  15. 26. A measurable part of a line with two endpoints.
  16. 27. A ray that divides an angle into two congruent angles.
  17. 29. A figure formed by two rays that share a common endpoint.
Down
  1. 1. Two angles whose measures add to 180°.
  2. 2. If points A, B, and C are collinear and B is between A and C, then AB+BC=AC
  3. 3. Points that do not lie on the same line.
  4. 5. An angle measuring exactly 90°.
  5. 9. A formula used to find the midpoint between two points.
  6. 13. Two coplanar lines that never intersect.
  7. 15. A pair of adjacent angles whose noncommon sides form a straight line.
  8. 16. Two angles that share a common vertex and a common side.
  9. 17. Two angles whose measures add to 90°.
  10. 18. The common endpoint of the rays that form an angle.
  11. 19. An angle measuring exactly 180°.
  12. 22. A straight path made up of points that extends infinitely in both directions.
  13. 25. Segments that have the same length.
  14. 28. Points that lie on the same line.