1. Geom1­2hour3.notebook August 29, 2011
BELL WORK:
Z B
R T
a) ZR ∪ ZB
b) ZR ∩ BT
c) ZRT ∪ RT
Aug 18­11:32 PM
Section 1.2: Measurements of Segments and Angles
0
0 24° 1
Segment AB: 2
3
1 4
5
6
2
7
8
3 9
10
11
4
12
13
5 14
15
260 270 280
250 290
240 300
100 90 80
230 110 70 310
120 60
B 220 130 50 320
140 0° 40
210 330
150 30
200 340
160 20
190
170 10
350 0°
180 180 0 360
190 350
170 10
200 340
160 20
210 330
150 30
220 Aug 18­7:30 AM320
140 230 310 40
130
240
250 290
300
50
1
260 270 280
120 60
110 70
100 90 80

2. Geom1­2hour3.notebook August 29, 2011
Obtuse Right Straight Acute
Aug 18­7:46 AM
Degrees and Minutes 1o =
1' =
Aug 18­10:27 PM
2

3. Geom1­2hour3.notebook August 29, 2011
congruent segments
congruent angles
V
E D
N H F
Aug 18­10:32 PM
Aug 18­10:53 PM
3

4. Geom1­2hour3.notebook August 29, 2011
Section 1.3 ­ Collinearity, Betweeness, and Assumptions
collinear points non­collinear points
betweenness: In order to say that a point is between two
other points, the three points must be collinear.
Aug 18­10:54 PM
Triangle Inequality:
The sum of the lengths of any two sides of a triangle is
always greater than the length of the third.
Aug 18­11:09 PM
4

5. Geom1­2hour3.notebook August 29, 2011
Aug 18­11:17 PM
Don't always ASSUME!
you should assume you should NOT assume
straight lines and angles right angles
collinearity of points congruent segments
betweenness of points congruent angles
relative positions of points relative size of segments and angles
Aug 18­11:22 PM
5