# Geometry

##### Across
1. 3. a geometric element that has position but no extension
2. 5. an ___ is formed by two rays that begin or end at the same point, and is measured in degrees
3. 6. A quadrilateral having both pairs of opposite sides parallel to each othe
4. 9. a pair of lines that never intersect
5. 10. two objects are _____ if they have same shape and dimensions
6. 14. a geometric term for "cut in half"
7. 17. a 3 sided polygon
8. 18. The line segment between two points on a given curve.
9. 19. area of a triangle is 1/2 * ___* height
10. 20. the point of intersection of lines or geometric shapes
##### Down
1. 1. an angle less than 90 degree
2. 2. two shapes are _____if their only differnce is size
3. 4. a measure for angles
4. 7. a triangle with all equal sides
5. 8. a collection of points which are equidistant from one common point called the center
6. 11. A part of a line starting at a particular point and extending infinitely in one direction.
7. 12. triangles in with each side is a different length
8. 13. a ____ angle is n angle of 90 degree
9. 15. closed segment of a differentiable curve in the two-dimensional plane
10. 16. a flat surface on which a straight line joining any two points on it would wholly lie.