UNIT 0 GEOMETRY VOCABULARY

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Across
  1. 4. a straight row of points that goes on forever in both directions
  2. 7. an angle that measures more than 90° but less than 180°
  3. 9. two angles whose measures sum to 90°
  4. 13. a two-dimensional figure that begins and ends at the same point
  5. 15. a two-dimensional shape in which every point is the same distance from the center
  6. 16. two angles whose measures sum to 180°
  7. 21. a polygon with exactly 4 sides and 4 angles
  8. 23. a set of points and lines in space
  9. 24. a specific point that marks the end of a line segment or the beginning of a ray
  10. 25. a triangle that has all three sides the same length
  11. 27. a single location in space
  12. 28. a triangle that has at least two sides the same length
  13. 29. a triangle that has one obtuse angle
  14. 30. a straight row of points that starts at one point and ends at another point
  15. 31. flat, or having measurement in two directions (like length and width)
Down
  1. 1. a triangle that has no sides the same length
  2. 2. solid, or having measurements in three directions (like length, width, and height)
  3. 3. two angles that share a vertex and a side and do not overlap
  4. 5. an angle that measures more than 0° but less than 90°
  5. 6. a two-dimensional closed figure made with three or more straight line segments that meet only at their endpoints
  6. 8. a geometric shape formed by two rays, lines, or line segments that meet at a common point
  7. 10. a triangle with one right angle
  8. 11. an angle that measures 90°
  9. 12. when two or more geometric figures (like lines, segments, or planes) meet or cross each other, sharing at least one common point
  10. 14. a unit used to measure angles
  11. 16. a line segment that forms part of a two-dimensional shape
  12. 17. a tool used to find the exact measurement of an angle
  13. 18. a part of a line that has one endpoint and goes on forever in one direction
  14. 19. an angle that measures 180°
  15. 20. the point where two rays, lines, or line segments meet to form an angle
  16. 22. two lines that meet to form a right angle, or a 90° angle
  17. 26. the opposite angles formed when two lines intersect