Warm up – Nov. 1

List all pairs of angles that fit the description.

a. Corresponding

b. Alternate Interior

c. Alternate Exterior

d. Consecutive Interior

12

34

56

78

t

HIDDEN MESSAGE

MAN . BOARD

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Corresponding

12

34

56

78

t

4 and 2 3 and 15 and 76 and 8

Alternate Interior

3 and 72 and 6

12

34

56

78

t

Alternate Exterior

5 and 14 and 8

12

34

56

78

t

Consecutive Interior

3 and 26 and 7 1

23

45

67

8t

Find all angle measures

1 67

3

t

113

180 - 67

2

5

6 7

8

67

67

67

113

113

113

CHAPTER 3LINES AND ANGLESPart II: Equations

Alternate Exterior Angles

• Name the angle relationship

• Are they congruent or supplementary?

• Find the value of x

125

t

5x

5x = 125

5 5x = 25

Corresponding Angles

• Name the angle relationship

• Are they congruent or supplementary?

• Find the value of x

2x + 1

t

151

2x = 150

2 2x = 75

2x + 1 = 151- 1 - 1

Consecutive Interior Angles

• Name the angle relationship

• Are they congruent or supplementary?

• Find the value of x

81

t

7x + 15

supp

7x = 847 7x = 12

7x + 96 = 180 - 96 - 96

7x + 15 + 81 = 180

Alternate Interior Angles

• Name the angle relationship

• Are they congruent or supplementary?

• Find the value of x

3x

t

2x + 20

20 = x

2x + 20 = 3x- 2x - 2x

Homework

P. 147 #18 – 26

and

HANDOUT

All HW due THURSDAY

QUIZ ON THURSDAY