GEOMETRY

1. A polygon with three sides and three angles.
4. An exact location in space.
6. Having the EXACT same size and shape.
8. A part of a line; it has one endpoint and continues without end in one direction.
10. An angle that measures greater than 0 degrees and less than 90 degrees.
11. A parallelogram with opposite sides that are equal, or congruent, and with four right angles.
13. Lines in the same plane that never intersect and are always the same distance apart.
15. A parallelogram with four equal, or congruent, sides.
16. A parallelogram with four equal, or congruent, sides and four right angles.
17. A polygon with four sides and four angles.
18. The point at either end of line segment of the starting point of a ray.

1. A quadrilateral with exactly one pair of parallel sides.
2. Lines that cross each other at exactly one point.
3. Two lines that intersect to form four right angles.
5. An angle that measures greater than 90 degrees and less than 180 degrees.
7. A quadrilateral whose opposite sides are parallel and equal, or congruent.
9. The number of square units needed to cover a surface.
12. A straight path of points in a plane that continues without end in both directions with NO endpoints.
14. An angle that forms a square corner and has a measure of 90 degrees.
16. An angle whose measure is 180 degrees.