1st Semester VOCAB

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Across
  1. 2. point on a segement that is the same distance from both enpoints
  2. 5. at least one diagonal is outside the polygon in order to make this
  3. 8. angles that share a vertex and common side & forms a line
  4. 10. point of concurrency for the angle bisectors in a triangle
  5. 11. This is half of the diameter
  6. 14. on the same line
  7. 16. begins at a point and extends infinitely in one direction
  8. 18. a line that intersects a circle at one point
  9. 22. A point where two angles begin or meet
  10. 24. point of concurrency for the altitudes in a triangle
  11. 26. divides segment or angle into two congruent parts
  12. 27. two angles whose sum is 90 degrees
  13. 30. on the same plane
  14. 31. triangle whose angles and sides are all different
  15. 33. segment consists of two endpoints & all points between them are collinear (two words)
  16. 35. The sum of the angles in a _________ is 1,080 degrees
  17. 36. line segment that connects two nonconsecutive vertices
  18. 37. a polygon that is equiangular and equilateral
  19. 38. Midpoint this property uses the following formula (two words)
  20. 41. Sum Conjecture that states that the sum of all the angles in a triangle equal 180 degrees (two words)
  21. 42. when a set of lines has a point in common
Down
  1. 1. A triangle can be constructed if the sum of its two sides is _________than the third
  2. 2. arc that is larger than a semicircle
  3. 3. two lines that do not intersect and are coplanar
  4. 4. the sum of the two ______ interior angles is equal to the exterior angle
  5. 6. This is an example of the longest chord in a circle
  6. 7. a line segment whose endpoints lie on the circle
  7. 9. Segment that connects one midpoint to another midpoint.
  8. 12. same size and shape
  9. 13. a line segment through a vertex and perpendicular to a line containing the base
  10. 15. point of concurrency for the perpendicular bisectos in a triangle
  11. 17. triangle that has all three angles measuring between 0 and 90 degrees
  12. 19. a line segment joining a vertex to the midpoint of the opposing side
  13. 20. congruent angles formed by two intersecting lines; share a common vertex; no common side
  14. 21. CPCTC: "__________ part of congruent triangles are congruent"
  15. 23. The _______ of the exterior angles of a n-gon is 360 degrees
  16. 25. Property in a proof that states that AB = AB
  17. 28. intersection that forms 90 degree angles
  18. 29. Pairs angles that share a vertex and common side & forms a line (two words)
  19. 32. formed by two rays that share a common endpoint
  20. 34. SSA and ________ cannot prove triangle congruency
  21. 39. if the measure of an angle is 30 degrees, the measure of its ______ angle is 330 degrees
  22. 40. A _______ is a way to show something is true