Geometry Vocabulary

2. lines that lie in different planes and are neither parallel nor intersecting
3. angles that are opposite each other and are congruent
6. an angle that is 90 degrees
8. angles that add to 180 degrees
9. part of a line that begins at a particular point (called the endpoint) and extends endlessly in one direction
10. angles that have equal measures
11. an exact position or location on a plane surface
12. the part of a line that connects two points. It has definite end points
13. a flat surface that extends indefinitely in all directions
14. angles that share a side and are supplementary
16. the common point where two lines meet
17. an angle that is between zero degrees and 90 degrees

1. an angle that is between 90 degrees and 180 degrees
4. angles that add to 90 degrees
5. when two lines (or line segments, or rays) meet a common point called the vertex
7. have exactly one point in common
11. lines in the same plane that never intersect
12. an angle that is 180 degrees
15. a straight path that is endless in both directions