Geometry Vocabulary

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Across
  1. 3. Angles Theorem/ Vertical angles are congruent
  2. 7. Negates both the hypothesis and conclusion of a conditional statement.
  3. 9. If a triangle is equilateral then it is equiangular
  4. 11. Theorem/ The segment connecting the midpoints of two sides of a triangle is parallel to the third side and is half as long as that side.
  5. 12. Angles/ Sum of their measure is 90 degrees
  6. 15. Property of Parallel Lines/ If two lines are parallel to the same line, then they are parallel to each other.
  7. 18. Postulate/ If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line.
  8. 19. of more lines, rays, or segments intersect in the same point
  9. 22. Angles Theorem/ if two sides of a triangle are congruent, then the angles opposite them are congruent.
  10. 23. A convex polygon that is both equilateral and equilangular
  11. 26. Statement/ "If and only if"
  12. 27. Pair Postulate/ If two angles form linear pair, then they are supplementary.
  13. 28. Exterior Angles Theorem/ If two parallel lines are cut by a transversal, then the pairs of alternate exterior angles are congruent.
  14. 29. Leg/ If the hypotenuse and a leg of a right triangle are congruent to the HL of a second triangle, then the two triangles are congruent
  15. 31. Postulate/ If there is a line and a point not on the line, then there is exactly one line through the point perpendicular to the given line.
  16. 33. Bisector/ Ray that divides an angle into two angles that are congruent
  17. 34. Reasoning/ When you find a pattern in specific cases and write a conjecture for the general case
  18. 37. Angles/ Two angles that share a vertex and side but no interior points
  19. 38. Angle/ An angle formed by the legs of a triangle
  20. 39. If two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle, then the two triangles are congruent.
Down
  1. 1. Exchanges the hypothesis and conclusion of a conditional statement.
  2. 2. Theorem/ two sides of one triangle are congruent to two sides of another triangle and the included angle of the first is larger than the angle of the second, then the third side of the first is longer than the third side of the second.
  3. 4. When an isosceles triangle has exactly two congruent sides, these two sides are..
  4. 5. Angles Theorem/ If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.
  5. 6. Lines/ Do not intersect and are not coplanar
  6. 8. Form/ AX+BY=C
  7. 9. Interior Angles Converse/ If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles are supplementary.
  8. 10. Addition Postulate/ If B is between A and C, then AB+BC=AC. If AB+BC=AC, then B is between A and C.
  9. 12. A specific case for which the conjecture is false
  10. 13. of Detachment/ If the hypothesis of a conditional statement is true, the conclusion is always true.
  11. 14. If two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the two triangles are congruent.
  12. 16. A polygon with three sides.
  13. 17. Angles/ Sum of their measures is 180 degrees
  14. 19. First write the converse and then negate both the hypothesis and the conclusion of a conditional statement.
  15. 20. All sides are congruent
  16. 21. three sides of one triangle are congruent to three sides of a second triangle, then the two triangles are congruent
  17. 24. Intercept Form/ y=mx+b
  18. 25. Property/ a(b+c)=ab+ac
  19. 30. Sum Theorem/ The sum of the measures of the interior angles of a triangle is 180 degrees
  20. 32. All angles in the interior of the polygon are congruent
  21. 35. Reasoning/ uses facts, definitions, accepted properties, and the laws of logic to form a logical argument.
  22. 36. Angles Theorem/ All right angles are congruent