1st Semester VOCAB

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Across
  1. 1. The _______ of the exterior angles of a n-gon is 360 degrees
  2. 5. at least one diagonal is outside the polygon in order to make this
  3. 8. a polygon that is equiangular and equilateral
  4. 9. begins at a point and extends infinitely in one direction
  5. 10. same size and shape
  6. 12. line segment that connects two nonconsecutive vertices
  7. 16. CPCTC: "__________ part of congruent triangles are congruent"
  8. 17. The sum of the angles in a _________ is 1,080 degrees
  9. 20. A point where two angles begin or meet
  10. 22. segment that consists of two endpoints & all points between them are collinear
  11. 24. Property in a proof that states that AB = AB
  12. 25. Segment that connects one midpoint to another midpoint.
  13. 28. a line that intersects a circle at one point
  14. 29. a line segment joining a vertex to the midpoint of the opposing side
  15. 30. two lines that do not intersect and are coplanar
  16. 32. A triangle can be constructed if the sum of its two sides is _________than the third
  17. 34. point of concurrency for the angle bisectors in a triangle
  18. 35. A _______ is a way to show something is true
  19. 36. triangle that has all three angles measuring between 0 and 90 degrees
Down
  1. 1. triangle whose angles and sides are all different
  2. 2. This is an example of the longest chord in a circle
  3. 3. angles that share a vertex and common side & forms a line
  4. 4. if the measure of an angle is 30 degrees, the measure of its ______ angle is 330 degrees
  5. 5. a line segment whose endpoints lie on the circle
  6. 6. intersection that forms 90 degree angles
  7. 7. point of concurrency for the altitudes in a triangle
  8. 11. when a set of lines has a point in common
  9. 13. a line segment through a vertex and perpendicular to a line containing the base
  10. 14. two angles whose sum is 90 degrees
  11. 15. formed by two rays that share a common endpoint
  12. 18. on the same line
  13. 19. on the same plane
  14. 21. congruent angles formed by two intersecting lines; share a common vertex; no common side
  15. 23. divides segment or angle into two congruent parts
  16. 26. point on a segement that is the same distance from both enpoints
  17. 27. This is half of the diameter
  18. 29. arc that is larger than a semicircle
  19. 31. Pairs of angles that share a vertex and common side & forms a line
  20. 33. the sum of the two ______ interior angles is equal to the exterior angle
  21. 36. SSA and ________ cannot prove triangle congruency