Semester 1 Vocabulary (Modules 16-20)

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Across
  1. 4. a flat surface that extends in all directions
  2. 5. triangle congruence theorem that uses two angles and the side in between them
  3. 8. part of a line with two endpoints
  4. 10. an angle that measures less than 90 degrees
  5. 11. angles formed when two parallel lines are intersected by a transversal
  6. 13. angles that have a sum of 180 degrees
  7. 14. angles that share a vertex and are opposite of each other
  8. 16. adjacent angles that form a line
  9. 17. a triangle with no equal sides and an angle over 90 degrees
Down
  1. 1. two angles that have a sum of 90 degrees
  2. 2. the common endpoint of two rays that form an angle
  3. 3. a triangle with two equal sides
  4. 6. found in the middle of a segment
  5. 7. lines that have opposite signed reciprocal slopes
  6. 9. triangle congruence theorem that uses two sides and the angle in between them
  7. 12. means two things have the same measure
  8. 15. cuts something in half