The document provides information about an upcoming geometry class including: - Homework will be collected on Monday and students should complete an independent drill without talking. - The class will define key geometry terms like length, segment addition postulate, and how to measure angles using a protractor. - Vocabulary and concepts are explained such as the ruler postulate for finding distances between points on a line, and how to notate angle measures. - Angle addition and adjacent angle definitions are given.

1. GT Geometry
Pass out paper in the bin
Construction homework will
be turned in Monday
Complete the drill on your
own no talking

2. 1. If x + 2 = 8, then (x + 1)2
= ?
A) 25 B) 36
C) 49 D) 64 E)
80
Geometry Drill 9/6/13
#6

3. Geometry Drill
2. If 5 – y = 1, then y2
– y= ?
A) 4 B) 6 C) 8
D) 10 E) 12
#6

4. Objective:
To define more key words in geometry
To identify & use the Segment Addition
Postulate and the ruler postulate
To measure angles using a protractor
To identify & use the Angle Addition
Postulate

5. Vocabulary
Length- The distance
from one to zero

6. The Ruler Postulate
1. Two points on a line can be paired with
the real numbers in such a way that
any two points can have coordinate 0
and 1
2. Once a coordinate system has been
chosen in this way, the distance
between any two points equals the
absolute value of the difference of their
coordinates.

7. Vocabulary
AB means the
measure of AB
AB=|a-b| or |
b-a|.

8. A B
3 6
TRY THIS

9. Segment Addition
Postulate
If point R is
between points P
and Q, then
 PR+ RQ = PQ

10. Find the value of Y
1)GE = y, EH = y–1,
GH =11
2) GE = 3y, EH = 24,
GH =7y – 4
G E H

11. Find the value of Y
3) GE = y+2, EH = 2y–
6, GH =20.
Is E the midpoint of GH ?

12. ????????
What unit do we use
to measure angles?
What instrument do
we use to measure
angles?

13. Protractor Posutlate
The measure of a
angle <ABC is
|a-b| or |b-a|.
a b

14. Notation
The measure of a
angle ABC is
ABCm∠

15. Vocabulary
Congruent Angles-
Angles that have the
same measure.
40º40º

16. VOCABULARY LIST
ADJACENT ANGLES -
TWO ANGLES IN A PLANE
THAT HAVE A COMMON
VERTEX AND A COMMON
SIDE BUT NO COMMON
INTERIOR POINTS

17. Angle Addition Postulate
If point S is in the
interior of < PQR,
then
PQRmSQRmPQSm ∠=∠+∠

18. ????????
What is the angle
between the hands
of a clock if the time
is 9:00?