Quizlet Math Vocab

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  1. Acute angles of a right triangle: The acute angles of a right triangle that are complimentary
  2. Acute Triangles: All angles are less than 60 degrees
  3. Alternate exterior angles: Angles that lie on the opposite side of the transversal outside the parallel lines
  4. Alternate Extirior angles theorem: if two parallel lines are but by a transversal then the alternate interior lines angles are congruent.
  5. Alternate interior angles: Non-adjacent angles that lie on opposite sides of the transveral between the lines
  6. Auxiliary lines: a line that is added in aid of a proof
  7. Base: bottom of a triangle
  8. Conjecture: educated guess coming from inductive reasoning
  9. Coordinate Proof: A style of proof that uses geometry and algebra
  10. Corollary: The theorem that follows right after another theorem
  11. Corresponding angles: Angles that are congruent
  12. Corresponding Angles: Angles that lie on opposite sides of the transveral (aaah idk!)
  13. Corresponding angles Postulate: If two parallel lines are cut by a transversal then the pairs of corresponding angles are congruent.
  14. Corresponding sides: sides that are congruent
  15. Counter example: Disproving conjecture
  16. CPCTC: Corresponding parts of congruent triangles are congruent
  17. Deductive Reasoning: Using logic to draw conclusions from given facts
  18. Equiangular Triangle: All the angles are congruent
  19. Equilateral Triangle: When all the angle measures in an equalateral triangle are 60 degrees
  20. Exterior angle: An outside angle
  21. Exterior angles: the measure of an exterior angle of a triangle is equal to the sum of the measures of its remote intirior angles
  22. Included Angle: An angle created by two adjacent sides
  23. Included side: A common side of two executive angles
  24. Inductive reasoning: based on a pattern
  25. Interior: the set of all inside points
  26. Interior angle: An inside angle
  27. Isosceles Triangle: two sides and two angles of a triangle are congruent
  28. Legs of an isosceles: congruent sides in a isosceles triangle
  29. Obtuse triangle: One of the angles in a triangle is larger than 90 degrees
  30. Parallel lines: Coplanar lines that never intersect
  31. Parallel planes: planes that never interect
  32. Parallel sides Theorem: If 2 lines have the same slope than there parallel.
  33. Perpendicular bisector: a line perpendicular to a segment at the it's midpoint
  34. Perpendicular Lines Theorem: in a coordinate plane, two nonvertical lines are perpendicular if and only if the product of their slopes is -1. Verical and horisantal lines are perpendicular
  35. Point slope form: y-y=m(x-x)
  36. Remote intirior angle: An interior angle that is not adjacent to the extirior angle
  37. Right angle: An angle that is exactly 90 degrees
  38. Right Triangle: One of the angles on a triangle is equal to 90
  39. Rise: the difference in the y values on 2 points on the line
  40. Run: the difference in the x values on 2points on the line
  41. Same side intirior angles: if two parallel lines are but by a transversal then the same side interior angles are supplementary.
  42. Same-side interior angles: Angles that lie on the same side of the transversal between the parallel lines
  43. Scalene Triangle: All the measures of the sides are different
  44. Skew lines: lines that are not parallel but never intersect
  45. Slope: the ratio of rise to run (y-y) over (x-x) equation: y1 - y2 ove x1 - x2
  46. Slope intercept form: y=mx+b
  47. Theorem: Any statement you can prove
  48. Transversal: A line that intersects two parallel coplanar lines
  49. Triangle Rigidity: If the side lengths are given there is only one specific shape
  50. Triangle Sum theorem: The sum of all the angle measures of a triangle is 180 degrees
  51. two angles: If two angles of one triangle are congruent to two angles of another triangle then the 3rd angles is congruent
  52. Vertex: The angle formed by two legs