Drill: Thursday, 11/3 Identify each of the following with a word(s).

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Presentation transcript:

Drill: Thursday, 11/3 Identify each of the following with a word(s). 1. points that lie in the same plane 2. two angles whose sum is 180° 3. the intersection of two distinct intersecting lines a pair of adjacent angles whose non-common sides are opposite rays OBJ: SWBAT identify the angles formed by two lines and a transversal.

3-1 Lines and Angles Warm Up Lesson Presentation Lesson Quiz Holt Geometry Warm Up Lesson Presentation Lesson Quiz Holt McDougal Geometry

Objectives Identify parallel, perpendicular, and skew lines. Identify the angles formed by two lines and a transversal.

Vocabulary parallel lines perpendicular lines skew lines parallel planes transversal corresponding angles alternate interior angles alternate exterior angles same-side interior angles

In which of these items can you identify parallel lines, perpendicular lines, parallel planes and perpendicular planes?

Geometry in the Real World

Geometry in the Real World

Segments or rays are parallel, perpendicular, or skew if the lines that contain them are parallel, perpendicular, or skew. Helpful Hint

Example 1: Identifying Types of Lines and Planes Identify each of the following. A. a pair of parallel segments LM ||QR B. a pair of skew segments KN and PQ C. a pair of perpendicular segments NS  SP D. a pair of parallel planes plane NMR || plane KLQ

Check It Out! Example 1 Identify each of the following. a. a pair of parallel segments BF || EJ b. a pair of skew segments BF and DE are skew. c. a pair of perpendicular segments BF  FJ d. a pair of parallel planes plane FJH || plane BCD

What is the name of the line that intersects these two lines?

Example 2: Classifying Pairs of Angles Give an example of each angle pair. A. corresponding angles 1 and 5 B. alternate interior angles 3 and 5 C. alternate exterior angles 1 and 7 D. same-side interior angles 3 and 6

Check It Out! Example 2 Give an example of each angle pair. A. corresponding angles 1 and 3 B. alternate interior angles 2 and 7 C. alternate exterior angles 1 and 8 D. same-side interior angles 2 and 3

F A C B I G D H

To determine which line is the transversal for a given angle pair, locate the line that connects the vertices. Helpful Hint

Example 3: Identifying Angle Pairs and Transversals Identify the transversal and classify each angle pair. A. 1 and 3 transversal l corr. s B. 2 and 6 transversal n alt. int s C. 4 and 6 transversal m alt. ext s

Check It Out! Example 3 Identify the transversal and classify the angle pair 2 and 5 in the diagram. transversal n same-side int. s.

Lesson Quiz: Part I Identify each of the following. 1. a pair of parallel segments EH || FG 2. a pair of skew segments BF and EH 3. a pair of perpendicular segments CG  GH 4. a pair of parallel planes ABC and EFG

Lesson Quiz: Part II Identify each of the following. 5. one pair alternate interior angles EHG and HGK 6. One pair corresponding angles EHG and FGJ 7. one pair alternate exterior angles IHE and JGK 8. one pair same-side interior angles EHG and HGF