Chapter 6-7 Crossword Puzzle

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Across
  1. 4. a quadrilateral whose four sides all have the same length
  2. 6. a type of quadrilateral, whose opposite sides are equal and parallel
  3. 8. the perpendicular line segment drawn from the vertex of the triangle to the side opposite to it
  4. 12. the point at which the three medians intersect
  5. 14. the point where the perpendicular bisectors of the sides of that particular triangle intersect
  6. 15. the point where all the three altitudes of the triangle cut or intersect each other
  7. 17. a straight line drawn from the vertex of a triangle to its opposite side in such a way, that it divides the angle into two equal or congruent angles
  8. 18. a quadrilateral with exactly one pair of parallel sides
Down
  1. 1. the line segment that is drawn from a vertex to the opposite side bisecting the side at a right angle
  2. 2. a triangle that has all its sides equal in length
  3. 3. composed of two congruent triangles
  4. 5. a regular quadilateral, which has all four sides of equal length and all four angles are also equal
  5. 7. a quadrilateral that has two pairs of consecutive congruent sides, but opposite sides are not congruent
  6. 9. incentre of the triangle
  7. 10. a line segment joining a vertex to the midpoint of the opposite side, thus bisecting that side
  8. 11. the point of intersection of all the three interior angle bisectors of the triangle
  9. 13. a segment that joins two nonconsecutive vertices of a polygon
  10. 16. equal sides and equal angles