Transcript Geometry D55

Warm Up
Find the values of y by substituting
x = 2, 3, 10
1. y = 3x-1
2. y = 4(x+3)
3. y = 8(x+4) + x(8+x)
Today’s Objective
 To identify basic shapes and figures in
Geometry in order to use them for future
objectives.
 Homework:
Worksheet
Marking Figures
To identify basic shapes and
figures in Geometry
 Warm Up
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√
Anticipatory Set
Marking Figures
Vocabulary
Ruler Postulate notes
Segment Addition Postulate Notes
Intersecting Lines and Planes
Gallery Walk
Closure
Anticipatory Set
 Where in the room do we find:
 Point
 Line
 Plane
 Segment
 Ray
Marking Segments
Measurements:
EF  mEF  4 cm
Bisected Segments:
GH AND XZ
BISECT EACH OTHER
E
4 cm
F
Congruent/Equal
Segments: AB  CD
AB  CD
B
A
C
D
G
X
Y
H
Z
Warm Up

Mark up the angles and segments to show the
statements
1)GH AND XZ
2)KM BISECTSmJKL
BISECT EACH OTHER
J
G
X
Y
H

Z
K
M
L
Today’s Objective
 TSWBAT understand basic figures and
postulates in Geometry in order to use them
later in the course.
 Homework:
Pg 12 #1-19 odd
To identify basic shapes and
figures in Geometry
 Warm Up
 Anticipatory Set







√
√
Marking Figures Worksheet
√
Vocabulary
Ruler Postulate notes
Segment Addition Postulate Notes
Intersecting Lines and Planes
Gallery Walk
Closure
Vocabulary
1. Postulate
2. Coordinate
3. Distance
4. Between
5. Congruent Segments
Postulate
 A rule that is accepted without any proof
Coordinate


The number that corresponds to a point
Where the point is located
A
3
Name of
Points
Coordinate
of Points
B
6
Distance
How far apart two things are.
2. The absolute value of the difference of the
coordinates of the point
1.
1.
2.
3.
A is at coordinate 1
B is at coordinate 8
The distance between A and B is:
Which equals?
1- 8
Between
 When 3 points are collinear then the point in
the middle is “between” the other two
 B is between A and C
A
B
C
Congruent Segments
 Line segments that have the same length are
congruent segments.
To identify basic shapes and figures in
Geometry
 Warm Up
 Anticipatory Set







√
√
Marking Figures Worksheet
√
Vocabulary
√
Ruler Postulate notes
Segment Addition Postulate Notes
Intersecting Lines and Planes
Gallery Walk
Closure
Ruler Postulate
 The points on a line can be matched one to
one with the real numbers. Giving them
coordinates
 Using their coordinates, we can find the
distance between the points
A=0
B=3
C=5
D=10
To identify basic shapes and figures in
Geometry
 Warm Up
 Anticipatory Set
 Vocabulary Quiz
 Vocabulary
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√
√
√
√
Ruler Postulate notes
√
Segment Addition Postulate Notes
Intersecting Lines and Planes
Gallery Walk
Closure
Segment Addition Postulate
 If B is between A and C, the AB + BC = AC
 AB = 15
 BC = 20
 AC = 35
15
B
A
A
35
20
C
C
Example of Segment Addition
 If segment EG is 36 and segment EF is 21,
what is segment FG?
E
F
G
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