3-1
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

3-1 PowerPoint PPT Presentation


  • 42 Views
  • Uploaded on
  • Presentation posted in: General

3-1. Lines and Angles. Holt Geometry. Warm Up. Lesson Presentation. Lesson Quiz. Warm Up Identify each of the following. 1. points that lie in the same plane 2. two angles whose sum is 180° 3. the intersection of two distinct intersecting lines

Download Presentation

3-1

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


3 1

3-1

Lines and Angles

Holt Geometry

Warm Up

Lesson Presentation

Lesson Quiz


3 1

Warm Up

Identify each of the following.

1.points that lie in the same plane

2.two angles whose sum is 180°

3.the intersection of two distinct intersecting lines

4. a pair of adjacent angles whose non-common sides are opposite rays

coplanar points

supplementary angles

point

linear pair


3 1

Objectives

Identify parallel, perpendicular, and skew lines.

Identify the angles formed by two lines and a transversal.


3 1

Vocabulary

parallel lines

perpendicular lines

skew lines

parallel planes

transversal

corresponding angles

alternate interior angles

alternate exterior angles

same-side interior angles


3 1

Helpful Hint

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


3 1

LM ||QR

KNand PQ

NS SP

Example 1: Identifying Types of Lines and Planes

Identify each of the following.

A. a pair of parallel segments

B. a pair of skew segments

C. a pair of perpendicular segments

D. a pair of parallel planes

plane NMR|| plane KLQ


3 1

BF || EJ

BFand DE are skew.

BF FJ

Check It Out! Example 1

Identify each of the following.

a. a pair of parallel segments

b. a pair of skew segments

c. a pair of perpendicular segments

d. a pair of parallel planes

plane FJH || plane BCD


3 1

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


3 1

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


3 1

Helpful Hint

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


3 1

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


3 1

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.


3 1

EH || FG

BFand EH

CG GH

Lesson Quiz: Part I

Identify each of the following.

1. a pair of parallel segments

2. a pair of skew segments

3. a pair of perpendicular segments

4. a pair of parallel planes

ABCand EFG


3 1

Lesson Quiz: Part II

Identify each of the following.

5. one pairalternate interior angles

EHG and HGK

6. One pair corresponding angles

EHG and FGJ

7. one pairalternate exterior angles

IHE and JGK

8. one pairsame-side interior angles

EHG and HGF


  • Login