Notes

Outline

Chapter 2

Name the underlined portion of the following statement: If the sun is shining then it is not raining.

hypothesis

Write the converse: If today is Saturday then we are not in school.

If we are not in school then today is Saturday.

Why are the following statements true? 1.  LN = LN 2.  If AB = BC and BC = 10 then AB = 10

1.   Reflexive Property 2.   Substitution Property

Name the following angles:

Angles 1 and 2:       Angles 3 and 4:    Adjacent Angles      Vertical Angles

Vertical angles are ___________.

Vertical angles are congruent:

m   1  +  m   2 = ______

180

m   1  +  m   2 = 180 because _________.

Angle Addition Postulate

If    1 and    2 are complementary angles then m    1 + m    2 =  ______

90

If    4 and    5 are supplementary angles then  m    4  +  m    5 =  ______

180

Slide 20

Slide 21

Slide 22

Slide 23

Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 30

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35

Slide 36

Slide 37

Slide 38

Slide 39

Slide 40

Slide 41

Slide 42

Slide 43

Slide 44