Across
- 1. The line of reflection of a figure with reflectional symmetry.
- 3. A tool used to construct circles.
- 4. Rotational symmetry with only one line of symmetry.
- 7. Formed by two noncollinear rays that share a common endpoint. Measured in degrees.
- 8. Two points on a circle and a continuous part of the circle between the two points.
- 11. A visual way to organize the steps in a complicated procedure in proper order.
- 15. Points that are on the same line.
- 19. Has two points at either end called the endpoints and all collinear points between them.
- 21. The most basic building block of geometry, a dot that has no size and only is there to mark a location. Always labeled with a capital letter.
- 24. The point that is the exact same length from each endpoint.
- 26. Points that are on the same plane.
- 30. Is equal to.
- 32. A ray that goes through the vertex of an angle and divides it into two congruent parts.
- 33. An equangular parallelogram, sides across from each other are congruent, congruent diagonals, all right angles.
- 34. A perpendicular segment from the center of the polygon's circumscribed circle to the side of the polygon.
- 36. A region between two radii and an arc of the circle.
- 39. A tool used to measure the degree of an angle.
- 41. All the possible diagonals are inside the polygon.
- 43. The Property that a figure coincides with itself under an isometry (same on both sides).
Down
- 2. An arc of a circle with the same endpoints as a diameter.
- 5. An angle with a measurement lower than 90 degrees.
- 6. A quadrilateral whose opposite sides are parallel.
- 9. A set of lines has a point in common.
- 10. The point of concurrency for the 3 perpendicular bisectors of a triangle.
- 12. An angle with a measurement higher than 90 degrees, but less than 180 degrees.
- 13. Have an endpoint and go on forever in one direction, coming out from the endpoint.
- 14. If a line passes through the midpoint of a segment, it ______ the segment.
- 16. An infinite amount of points that go in two directions forever.
- 17. The property that a figure coincides with itself under a reflection. Also called line symmetry or mirror symmetry.
- 18. The common endpoint of the two rays that make up an angle.
- 20. A line intersecting two or more other lines in a plane.
- 22. Points that mark the end of a section, showing it doesn't go on forever.
- 23. The point of concurrency for the 3 altitudes of a triangle.
- 25. A line segment that connects two non-consecutive vertices.
- 27. The point of concurrency for the three angle bisectors of a triangle.
- 28. Has length and width, but no thickness. A flat surface that extends out forever. It is represented as a four-sided shape, similar in appearance to a tilted piece of paper. Name it with a capital letter in script.
- 29. The _____ of a circle is the region between a chord and an arc of the circle.
- 31. A tool used to construct lines, rays, and line segments.
- 33. The property that a figure coincides with itself under some rotation.
- 35. The point of concurrency for the three medians of a triangle. (The center of gravity)
- 37. At least one possible diagonal is outside the main shape.
- 38. A concave kite.
- 40. The region between two concentric circles.
- 42. Two lines that don't intersect and aren't on the same plane.