Geometry concepts

1. lines: lines in the same plane
5. points: cannot be placed in a single plane
7. type of angle less than 90’
10. points: are on the same line
14. set of all points in a plane that are the same distance from a given point
15. type of angle that is greater than 90/
16. a ray without an endpoint
17. any two angles the sum of whose measures is 190’
18. lines: lines that cannot be contained in a single plane; they are noncoplanar
21. lines: lines with exactly one point in common
23. commonly used to measure angles, a complete rotation has a measure of 360.
24. angles that share a common vertex an da common side, but whose interiors do not overlap
25. an arc determined by a diameter
26. a degree is subdivided into 60 equal parts.

2. statements that cannot be proven
3. points in the same plane
4. lines: lines that intersect in a single point
6. segment: a subset of a line that contains two points of the line and all points between those two points
8. statements that can be deduced using logic, undefined terms, exions, definitions, and previously proved theorems.
9. of a circle is any part of the circle that can be drawn without lifting a pencil.
11. the union of two distinct rays that share only an endpoint
12. fundamental building block of geometry
13. plane: a subset of a plane that consists of all points in the plane on one side of a line
17. each minute is divided into 60 equal seconds.
19. plane: have a single line in common
20. uniquely determined by two points.
22. angle whose sides are opposite rays forming a straight line