Geometry Vocabulary

1. line in the plane of the circle that intersects the circle in one point
5. a line segment that goes from the edge of a circle to the center
7. two lines that intersect to form right angles
8. line that intersects a circle in two points
10. An angle whose vertex is the center of a circle
11. a one dimensional figure that goes on forever in two directions
14. a line segment that goes from edge to edge of a circle and passes through the center
15. an arc whose measure is greater than 180 degrees
19. two angles that share a vertex and no sides and are formed by intersecting lines
21. an arc whose measure is less than 180 degree
22. a triangle with one obtuse angle
23. noncoplanar lines that will not intersect
24. a point that divides the segment into two congruent segments
25. the point equidistant from all edges of a circle

2. angles outside parallel lines, on opposite sides of the transversal, and on different parallel lines
3. angles inside parallel lines, on opposite sides of the transversal and on different parallel lines
4. An angle whose vertex is on the edge of the circle
6. two angles whose sum is 180 degrees
9. ray that divides an angle into two congruent adjacent angles
12. an arc whose measure is exactly 180 degrees
13. two lines are parallel if they are coplanar and do not intersect
16. two angles whose sum is 90 degrees
17. a triangle with all congruent sides
18. on the same plane
20. an angle less than 90 degrees but more than 0 degrees