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Warm UpFind the values of y by substituting
x = 2, 3, 101. y = 3x-12. 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: Marking Figures Worksheet
To identify basic shapes and figures in Geometry
Warm Up √ 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 SegmentsMeasurements:
Congruent/Equal Segments:
Bisected Segments:
F
EcmEFmEF 4
4 cm
B
A
D
C
CDAB CDAB
ZX
G
H
Y
OTHEREACHBISECT
XZANDGH
Warm Up
Mark up the angles and segments to show the statements
ZX
G
H
Y€
1)GH AND XZ
BISECT EACH OTHER
K
L
J
M
€
2)KM BISECTS m∠JKL
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. Postulate2. Coordinate3. Distance4. Between5. Congruent Segments
Postulate
A rule that is accepted without any proof
Coordinate
The number that corresponds to a point
Where the point is locatedA B
Name of Points
3 6Coordinate of Points
Distance
1. How far apart two things are.2. The absolute value of the difference of
the coordinates of the point1. A is at coordinate 12. B is at coordinate 83. The distance between A and B is:
Which equals?
8-1
Between
When 3 points are collinear then the point in the middle is “between” the other two B is between A and CA 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 √ 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
A B C15 20
A C35
Example of Segment Addition If segment EG is 36 and segment EF
is 21, what is segment FG?
F GE
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