1. Slide

60 seconds

HW Questions

2. Slide

60 seconds

Concepts

Parallel lines: Two coplanar lines that never intersect. The symbol || means "is parallel to". Skew lines: Two noncoplanar lines. They are not parallel, and they do not intersect. Parallel planes: Two planes that do not intersect.

3. Slide

60 seconds

Example

Which segments are parallel to AB?

4. Slide

60 seconds

Example

Which segments are skew to CD?

5. Slide

60 seconds

Example

What are two pairs of parallel planes?

6. Slide

60 seconds

Example

What are two segments parallel to plane BCGF?

7. Slide

60 seconds

Concepts

Transversal: A line that intersects two or more coplanar lines.

8. Slide

60 seconds

Concepts

Alternate Interior Angles: Nonadjacent interior angles that lie on opposite sides of the transversal.

9. Slide

60 seconds

Concepts

Same-side Interior Angles: Interior angles that lie on the same side of the transversal.

10. Slide

60 seconds

Concepts

Corresponding Angles: Angles that lie on the same side of the transversal and in the same position.

11. Slide

60 seconds

Concepts

Alternate Exterior Angles: Nonadjacent exterior angles that lie on opposite sides of the transversal.

12. Poll

50 seconds

Which is a pair of alternate interior angles?

- ∠1 and ∠3
- ∠6 and ∠7
- ∠2 and ∠6
- ∠4 and ∠8

13. Poll

50 seconds

Which is a pair of corresponding angles?

- ∠1 and ∠3
- ∠6 and ∠7
- ∠2 and ∠6
- ∠4 and ∠8

14. Poll

50 seconds

Which is a pair of alternate exterior angles?

- ∠1 and ∠3
- ∠6 and ∠7
- ∠2 and ∠6
- ∠4 and ∠8

15. Slide

60 seconds

1-6 Classwork

Complete Page 144 #11-24 all

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