Across
- 1. A type of quadrilateral, whose opposite sides are equal and parallel
- 3. A regular quadrilateral, which has all the four sides of equal length and all four angles are also equal
- 6. A quadrilateral with four equal sides. Its opposite sides are parallel, and opposite angles are equal.
- 7. The orthocenter is the point where all three altitudes of the triangle intersect. An altitude is a line which passes through a vertex of the triangle and is perpendicular to the opposite side.
- 8. A line that passes through two very specific points on a triangle: a vertex, or corner of a triangle, and its opposite side at a right, or 90-degree, angle
- 10. The ________ is the center point of the object
- 13. A line that bisects another line segment at a right angle, through the intersection point
- 15. A quadrilateral with two pairs of parallel sides
- 16. A triangle that has all its sides equal in length.
- 17. A ________ is a line segment connecting the opposite vertices (or corners) of a polygon
- 18. A point which is at the same or equal distance from two given points
Down
- 2. The point where the triangle's three perpendicular bisectors intersect
- 4. A quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other
- 5. A line that splits an angle into two equal angles
- 9. The intersection point of all the three interior angle bisectors of the triangle
- 11. A four-sided shape which has one pair of sides as parallel
- 12. A line segment that joins a vertex to the mid-point of the side that is opposite to that vertex
- 14. A triangle with equal angles