Definitely Definitions
Points, Lines and Planes
Symbols
Based on the Picture...
Postulates
100
A measurable part of a line containing 2 endpoints
What is Line Segment
100
A location with no size or shape.
Point
100
Identified by a capital letter
Point
100
Name the plane. 
plane N
100
The number of points needed to form a line
2 points
200
Part of a line that consists of one endpoint and all points of the line extending indefinitely in one direction.
ray
200
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A term made up of infinite points that has no thickness or width.
200
Named by any 3 non-collinear points or an uppercase script (cursive) letter
Plane
200
Name a ray.
Ray BA, Ray BD, Ray BC
200
Where two lines intersect.
A point
300
The point on a line segment that divides it into two parts of the same length.
What is Midpoint
300
This has length and width but no depth (two dimensions)
Plane
300
Named by a lowercase script (cursive) letter
line
300
Name 2 other names for line AB
line AC or line r
300
The number of non-collinear points needed to create a plane.
3 Noncollinear Points
400
The intersection of two rays at an endpoint.
What is an Angle
400
Two or more points on the same line.
What are Collinear Points
400
_l_
Perpendicular
400
Name 3 Colinear points
J, K, L
400
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This is what is formed where two planes intersect.
500
A segment, line, or plane that intersects a segment at its midpoint
Segment Bisector
500
Four or more points that are not on the same plane
noncoplanar points
500
l l
Parallel
500
2 sets of non-colinear points
M & K, M & L, M & N, N & L, N & J
500
The number of points on a line
Infinite