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

OTHEREACHBISECTXZANDGH

Warm Up

Mark up the angles and segments to show the statements

ZX

G

H

Y€

1)GH AND XZBISECT 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 = 35A B C

15 20

A C35

Example of Segment Addition If segment EG is 36 and segment EF

is 21, what is segment FG?F GE

www.classzone.com

Classzone.com

Let’s Review the Vocabulary