Definitions Flashcards
1
Q
Point
A
Unique, exact position in space.
2
Q
Space
A
The set of all points in space
3
Q
Line
A
A particular set of points in space
4
Q
Plane
A
Extending forever in all directions
(Infinitely many points and infinitely lines)
5
Q
Colinear
A
Three points are colinear then one of the points is between the other two points
6
Q
Concurrent
A
Two or more lines that have one point in common to all of them
7
Q
Skew lines
A
Are not parallel and do not intersect
8
Q
Half line
A
Subset of a line containing all the points of the line on one side of a given point (excluding that point)
9
Q
Coplanar
A
- they intersect at one point
- lines lie on the plane
- line is parallel to the plane u
