4th Math Vocabulary

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Across
  1. 5. two lines that intersect to form four right angles
  2. 7. an angle whose measure is 180 degrees
  3. 9. a triangle with one right angle
  4. 11. triangle with one obtuse angle
  5. 12. the measurement of the distance between two points
  6. 13. part of a line that includes two points called endpoints
  7. 14. that measures greater than 0 degrees and less than 90 degrees
  8. 17. a straight path of points that continues without end in both directions
  9. 19. and angle that measures 90 degrees and forms a square corner
  10. 20. in the direction from left to right
  11. 21. a part of a line that has one endpoint and continues without end in one direction
Down
  1. 1. measures greater than 90 degrees and less than 180 degrees
  2. 2. lines lines that cross each other at exactly one point
  3. 3. an exact location in space
  4. 4. the unit used for measuring angles and temperature
  5. 6. lines that never intersect and are always the same distance apart
  6. 8. triangle with three acute angles
  7. 10. a shape formed by two line segments or rays that share the same endpoints
  8. 15. the point at either end of a line segment or the starting point of a ray
  9. 16. the point at which two rays of an angle meet
  10. 18. an imaginary line on a shape about which the shape can be folded so that its two parts match exactly