Across
- 3. Two lines that do not intersect. They are not coplanar. (3.1)
- 6. Has zero dimension. Represented by a dot. (1.1)
- 9. Part of a circle that is equal to 180 degrees. It is half of a circle. (10.2)
- 11. Made up of two different rays with the same endpoints. Endpoint is the vertex, and rays are the side. (1.4)
- 13. Two angles that lie between two lines. They are on opposite sides of the transversal. (3.1)
- 17. The amount of space taken up in a flat, 2-D object. It is measured in units squared. (11.3)
- 18. Has one dimension. Represented by a line with two arrow heads. (1.1)
- 19. Two angles that lie outside parallel lines. They are on opposite sides of the transversal. (3.1)
Down
- 1. The distance around a circle. It is measured by calculating 2πr. (11.1)
- 2. lines Two lines that do not intersect. They are coplanar. (3.1)
- 4. Bigger than one results in an enlargement. Smaller than one results in a reduction. (9.6)
- 5. Have a common endpoint. They are collinear. (1.1)
- 7. An angle whose vertex is the center of the circle. The two endpoints of the angle are on the circle. (10.2)
- 8. A chord that goes through the center of a circle. It is twice the length of the radius. (10.1)
- 10. Part of a circle that is less than 180 degrees. It is the measure of the central angle. (10.2)
- 12. Has two dimensions. Through any three points not on the same line, there is exactly one. (1.1)
- 14. A segment from the center to the edge of a circle. It is one half of the diameter. (10.1)
- 15. Part of a circle that is greater than 180 degrees. It is measured by taking 360 degrees minus the measure of the minor arc. (10.2)
- 16. A transformation that produces an image that is the same shape as the original. It is a different size, an enlargement or reduction. (9.6)
- 20. Has one endpoint. The other keeps going. (1.1)