Geometry Crossword

1. A line segment that has both endpoints on a circle
2. The distance around a 2-dimensional object's outside
5. Means "at right angles". A line meeting another at a right angle
7. An angle that has both endpoints on a circle
8. If x=y, then y can be substituted in for x in any expression
9. the event in which the first event or the second event (or both) occur
10. The measure of any side or angle equal to itself
11. A point that divides a line segment into two parts of equal length
18. If x=y and y=z, then x=z
19. The amount each side of a figure is multiplied by when the figure is proportionally enlarged or reduced in size
21. Anangle in a circle with its vertex on the circle
22. A transformation that maintains the shape of a figure but multiplies its dimensions by a chosen factor

1. The study of geometry on a coordinate grid
3. A rigid transformation that involves sliding a figure to a new location
4. A rigid transformation that involves flipping a figure over the line of reflection
6. The event in which both the first event and the second event occur
12. A line segment that goes from one corner to another, but is not an edge
13. Two-dimensional closed figure made up of straight line segments connected end-to-end.These segments may not cross at any other points
14. The number of square units needed ti fill a region on a flat surface
15. Events that can never happen at the same time
16. Means to divide into two equal parts
17. Formed by two radii of a central angle and the arc between their endpoints on the circle
20. Set of points a fixed distance from a center and is defined by a central angle