Across
- 3. A construction tool used to draw arcs.
- 6. Two angles that have a common vertex and side, but have no common interior points.
- 7. The point that divides, or bisects, a segment into two congruent segments.
- 8. Points that lie on the same plane.
- 9. Extends in one dimension. It is usually represented by a straight line with two arrowheads.
- 10. An angle that measures 90°.
- 11. Points that lie on the same line.
- 13. Divide into two congruent parts.
- 14. An unproven statement that is based on observations.
- 15. It is usually represented by a small dot.
- 17. A process that includes looking for patterns and making conjectures.
- 20. An example that shows a conjecture is false.
- 22. A formula for finding the distance between two points in a coordinate plane.
- 27. Consists of two adjacent angles whose noncommon sides are opposite rays.
- 29. Part of a line that consists of a point, called an initial point, and all points on the line that extend in one direction.
- 30. The initial point in an angle.
Down
- 1. An angle that measures between 90° and 180°.
- 2. Two angles whose measures have the sum of 90°.
- 4. Two angles whose measures have the sum of 180°.
- 5. Consists of two different rays that have the same initial point.
- 8. Segments that have the same length.
- 12. A formula used to find the midpoint of a segment.
- 16. Part of a line that consists of two points, called endpoints, and all points on the line between the endpoints.
- 18. A ruler without marks; A construction tool used to draw segments.
- 19. Angles that consist of two angles whose side form two pairs of opposite rays; they are congruent.
- 21. Rules that are accepted without proof; axioms.
- 23. An angle that measures 180°.
- 24. An angle that measures between 0° and 90°.
- 25. A real number that corresponds to a point on a lie.
- 26. The distance between the endpoints of a segment.
- 28. Extends in two dimensions. It is usually represented by a shape that looks like a tabletop or wall.