warm up (draw each one)
DESCRIPTION
Warm up (draw each one). 1) Vertical line m intersects a horizontal plane M at point O . 2) Horizontal plane P contains two lines k and n that intersect at point A . 3) Vertical planes X and Y intersect at line AB . 4) Point P is not in plane N. 1.3 Segments, Rays, and - PowerPoint PPT PresentationTRANSCRIPT
Warm up (draw each one)
1) Vertical line m intersects a horizontal plane M at point O.
2) Horizontal plane P contains two lines k and n that intersect at point A.
3) Vertical planes X and Y intersect at line AB.
4) Point P is not in plane N.
Segments A line with two endpoints. It consists of the two endpoints and
those points in between.
A
B
AB
ABLABEL
Rays A ray has one endpoint and extends out
endlessly in one direction. The endpoint (A) is always named first.
A
B
AB��������������LABEL
Number Line COORDINATE – number associated with a
letter Coordinate of M? Coordinate of J?
J A M
7
-4
Distance The distance of a segment = length LABEL JA = ? AM = ?
J A M
6 5
Segment Addition Postulate
If B is between A and C, then AB + BC = AC
A
B
C
CONGRUENCE CONGRUENT: two objects that have the same
size and shape
Congruent Segments: segments with equal lengths.
12.412.4
MIDPOINTMidpoint of a Segment: is the point that divides the segment into
two congruent segments.
BISECTOR
Bisector of a segment:
is a line, segment, ray, or plane that intersects the segment at its midpoint.
R
Y
C
A
Z
Find x if RA = 2x + 4, AY = 3x + 1,
and RY = 30.
2x + 43x + 1
30
2x + 4 + 3x + 1 = 305x + 5 = 30 - 5 - 55x = 25 /5 /5 x = 5
PRACTICE
Page 14
Classroom Exercises
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