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Notes #1 (1.1 & 1.2)1-1 Points, Lines, and Planes
1-2 Linear Measure and Precision
Standard 1.0: Students demonstrate understanding by identifying and giving examples of undefined terms.
Objective: Identify and model points, lines, and planesIdentify collinear and coplanar points and intersecting lines and planes in space.Identify segments and compute with measures
Definitions
Point: has no size. Think “a dot”
Space: is the set of all points
Undefined Terms: are terms that can only be explained using examples and descriptions.
Line: a series of points that extends without end in two directions.
Collinear points Non-collinear points
A
BAB reads line AB reads line t
t
Points thatlay on a line
Points thatdon’t lay ona line.
Plane: is a flat surface that is two dimensional, it also extends without end.
Coplanar: Points and lines in the same plane
P
plane P
A •B •
C •
plane ABC
•G
•H•J
•K
•M•L
DO NOW…..CW #1 pg. 9 (1-9)
Line segment (segment): is a line with endpoints.
EndpointsA B
Name the segment AB or BA
Point M is between points P and Q if and only if P, Q and M are collinear
Segment Addition Segment Subtraction
PM + MQ = PQ QR = MR – MQ
DO NOW…..CW #1 pg. 17 (7-10)
Classwork #1Pg. 9 (1 - 9)
Pg. 17 (7-10)Homework #1Pg. 9 (10-26)
Pg. 18 (25-33)odd