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