Across
- 4. A quadrilateral with no parallel sides.
- 6. A trapezoid which contains two right angles.
- 7. The endpoints of each side of the polygon.
- 9. The center of mass of the triangle.
- 11. A triangle with a right angle.
- 12. A general term for four-sided polygon.
- 14. The center of the largest circle that can be inscribed in a triangle.
- 16. A quadrilateral in which the opposite sides are parallel.
- 19. The perimeter of the circle.
- 22. A parallelogram in which all sides are equal.
- 23. The study of geometric figures that can be drawn on a two-dimensional surface.
- 25. A triangle with two congruent sides and two congruent triangles.
- 28. A quadrilateral with one pair of parallel sides.
- 30. line A line that intersects the circle in two points.
- 32. An expression of equality between two ratios.
- 35. A triangle with no congruent sides and no congruent angles.
- 36. The amount of two-dimensional space that a plane figure occupies.
- 37. Angle formed between two adjacent sides.
- 39. A Latin word which means congruent.
- 40. The line which contains the orthocenter, centroid, and the circumcenter.
Down
- 1. The point of intersection of the medians of a triangle.
- 2. The line segment joining any two non-adjacent vertices.
- 3. The angle opposite to the base.
- 5. The distance between two parallel sides of a quadrilateral.
- 6. A parallelogram in which the interior angles are all right angles.
- 8. An angle that is adjacent to and supplementary to an interior angle of the polygon.
- 10. The side that is perpendicular to the altitude.
- 13. Pairs of sides that share a common endpoint.
- 15. A line segment which joins any two adjacent vertices.
- 17. The area bounded by any two concentric circles.
- 18. Divides an angle of a triangle into two congruent angles.
- 19. The center of the circle circumscribing a triangle.
- 20. A triangle with three congruent angles.
- 21. A closed plane figure formed by line segments.
- 24. A conic with an eccentricity that is less than 1.
- 26. A special type of rectangle in which all sides are equal.
- 27. A conic section in which the eccentricity is equal to 1.
- 29. A polygon that is neither equiangular nor equilateral.
- 31. Circles that have different radii but have common center.
- 33. Angle that is equal to one-half the measure of its intercepted arc.
- 34. The line segment connecting the midpoint of a side and the opposite vertex.
- 38. A triangle with no right triangle.