Chapter 5 Vocabulary

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Across
  1. 1. A conclusion that follows easily from a given theorem.
  2. 6. The point where the altitudes of a triangle meet.
  3. 8. A quadrilateral whose opposite sides are parallel.
  4. 10. Line segment from the vertex of a triangle that is perpendicular to the opposite side.
  5. 11. A quadrilateral with exactly one pair of parallel sides.
  6. 14. A polygon for which a segment joining any two points in the interior does not lie entirely within the figure.
  7. 15. A triangle having one right angle.
  8. 16. A line segment connecting any two nonadjacent vertices of a polygon.
  9. 17. A polygon with sides of equal length and angles of equal measure.
  10. 19. Point where the three medians of a triangle intersect.
  11. 20. A single example that proves a statement false.
  12. 22. A parallelogram with four equal sides.
  13. 23. Line from a vertex of a triangle to the midpoint of the opposite side.
Down
  1. 2. A triangle having one angle greater than 90 degrees.
  2. 3. A triangle with no equal sides.
  3. 4. A four sided figure.
  4. 5. A triangle whose angles are all less than 90 degrees.
  5. 7. A parallelogram with four right angles.
  6. 9. Angle formed by extending one side of a triangle through any vertex.
  7. 12. The point where the angle bisectors of the angles of a triangle intersect.
  8. 13. A triangle with three equal sides.
  9. 14. A polygon for which the line segment joining any two points in the interior lies entirely within the figure.
  10. 18. A triangle with two equal sides.
  11. 21. A closed, many-sided geometric figure.