Unit 1 Review Crossword Puzzle

3. The point halfway between two given points.
6. A transformation that turns a figure about a fixed point.
7. Any three noncollinear points that lie on one and only one plane.
8. A transformation that does not alter the size or shape of a figure; rotations, reflections, translations are all rigid transformations.
11. The largest possible circle that can be drawn inside a plane figure.
13. Two angles that are adjacent (share a leg) and supplementary.
14. A line or ray that divides an angle in half.
17. Two angles that add up to 180°.
19. A circle which passes through all the vertices of the polygon.
20. Two acute angles that add up to 90°.
21. The straight path connecting two points and extending beyond the points in both directions.
22. Extending in the same direction, everywhere equidistant, and not meeting
23. The geometric figure formed at the intersection of two distinct lines.

1. Something that is at right angles to something else.
2. The point of intersection of the perpendicular bisectors of the sides.
4. A transformation that "slides" an object in a fixed distance and in a given direction.
5. A single point indicating where a line segment or ray starts or ends.
7. A perpendicular line or a segment that passes through the midpoint of a line.
9. Lying in the same plane.
10. A line or a ray or a segment that divides a line segment into two equal parts.
12. A part of a line starting at a particular point and extending infinitely in one direction.
15. The point of intersection of the polygon's angle bisectors.
16. A transformation in which the figure is the mirror image of the other.
18. A straight line which links two points without extending beyond them.
19. Lying on the same line.