Math Crossword

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Across
  1. 2. a mathematical relationship or rule expressed in symbols.
  2. 4. angle less than 90 degrees.
  3. 5. angle greater than 90 degrees but less than 180 degrees.
  4. 7. an angle greater than 180 degrees but less than 360 degrees.
  5. 9. a part of a line with two end points.
  6. 10. angle which is exactly equal to 90 degrees.
  7. 11. two angles whose sum is 90 degrees.
  8. 13. common vertex, common arm, two non-common arms on different sides of the common arm.
  9. 14. and part of a line with one end point.
Down
  1. 1. two angles whose sum is 180 degrees.
  2. 3. end point of the two rays making an angle.
  3. 4. formed when two rays originate from the same point.
  4. 6. angle equal to 180 degrees.
  5. 8. sum of two adjacent angles is 180 degrees.
  6. 12. a statement that the values of two mathematical expressions are equal (indicated by the sign =).