Geometry Vocab

2. a polygon with eight sides
4. the sum of the area of the faces of a three-dimensional figure
7. parallel to the horizon, east to west
8. two lines lying in the same plane that do not intersect
12. a polygon with six sides
13. a polygon with four sides
15. a closed plane figure formed by three or more line segments that do not cross
17. a collection of points lying in one plane, extending forever in two directions
18. the perimeter of a circle
19. a quadrilateral with both pairs of opposite sides parallel
21. the PLURAL form of a segment that has one endpoint at the center and the other endpoint on the circle
23. a parallelogram with four right angles and four congruent sides
27. the point that divides a segment into two congruent segments
28. two angles whose measures sum is 180 degrees
29. a segment that connects two vertices that are not next to each other

1. a geometric tool used to draw circles and arcs
3. a polygon with three sides
5. having the same size and shape
6. the number of cubic units needed to fill the space inside a three-dimensional figure
9. a parallelogram with four equal sides
10. perpendicular to the horizon, north to south
11. two lines that intersect at right angles
14. an angle with a measure of less than 90 degrees
16. two lines that cross at one point
20. an angle with a measure of exactly 90 degrees
22. a segment that passes through the center of a circle and has both endpoints on the circle
24. an angle with a measure of greater than 90 degrees but less than 180 degrees
25. two angles whose measures sum is 90 degrees
26. a particular place in space