Geometry 2.4

Identify Pairs of Lines & AnglesLearning Target:

I can identify angle pairs formed by three intersecting lines

[G-CO.1]

3 46 5

7 810 9

Parallel lines:

Skew lines:

Parallel Planes:

DEFINE ........

rp

s

Name:Parallel lines

Parallel planes

Skew lines

A transversal is a line that intersects two or more coplanar lines at different points.

1 2

3 4

5 6

7 8

t

Interior s

Do Activity!

Exterior s

Corresponding AnglesDescription Picture/Example

Alternate Exterior AnglesDescription Picture/Example

Alternate Interior AnglesDescription Picture/Example

Consecutive (Same-side) Interior AnglesDescription Picture/Example

Classify the pair of numbered angles.

3. 4.

5. 6.

corresponding

alternate exterior

alternate interior

consecutive (same-side) interior

65 4

78 1

23

a) corresponding

______ and ______

______ and _______

______ and _______

______ and _______

d) same-side interior

______ and _______

______ and _______

c) alternate interior

______ and _______

______ and _______

b) alternate exterior

______ and _______

______ and _______

IDENTIFY all pairs of angles of the given type:

Assignment:

2.4 worksheet

Geo 2.4 Wksht answers1. parallel2. perpendicular3. perpendicular4. skew

5. QR or LP6. LP or QR or RS or PN7. LP or QR8. plane SNM

9. corresponding10. alternate-exterior11. same-side interior12. alternate interior13. corresponding14. alternate-interior

15. ∠2 and ∠8, ∠1 and ∠7, ∠3 and ∠5, ∠4 and ∠616. ∠1 and ∠3, ∠ 2 and ∠4 ∠6 and ∠8, ∠5 and ∠7

17. ∠3 and ∠7, ∠2 and ∠618. ∠7 , ∠L, ∠KLM, ∠MLK

L LK and LM, obtuse

19. 90˚, 36˚ 20. 132˚, 48˚21. 7, 28˚, 27˚ 22. 6, 48˚

23. comp: ∠QOP and ∠ROS, supp: ∠POQ and ∠QOS

OR ∠ROS and ∠ROP