Unit 3: Parallel and Perpendicular Lines Vocabulary Review

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Across
  1. 2. line that intersects two coplanar lines in two points.
  2. 4. a proof in which arrows show the logical connections between the statements.
  3. 5. an equation in the form Ax + By = C
  4. 6. are the two nonadjacent interior angles corresponding to each exterior angle of a triangle.
  5. 8. a polygon whose angles are all the same measure.
  6. 11. a triangle whose sides are all the same length.
  7. 12. a triangle that has no congruent sides.
  8. 14. proof statements and reasons are aligned in columns.
  9. 15. a triangle that has one right angle.
  10. 16. a polygon that is both equilateral and equiangular.
  11. 17. lie on the same side of the transversal 1 and between lines l and m.
  12. 19. angles these angles lie on the same side of the transversal t and in corresponding positions relative to l and m.
Down
  1. 1. a triangle with three acute angles.
  2. 3. are nonadjacent interior angles that lie on opposite sides of the transversal.
  3. 7. form the equation y - y1 = m ( x - x1)
  4. 9. a triangle that has at least two congruent sides.
  5. 10. is an angle formed by a side and an extension of an adjacent side.
  6. 13. a linear equation in the form y = mx + b
  7. 18. a triangle that has one obtuse angle.