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F A5. Lines and Symbols. Unit 4. Unit 4 Lines & Symbols. page 37. Learning Objectives. Identify features from different lines Match drawings symbols with their meaning. property line. border line. object line. hidden line. center line. Alphabet of Lines. UNIT 4 page 37.

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F a5

F

A5

Lines and Symbols

Unit 4


Unit 4 lines symbols

Unit 4Lines & Symbols

page 37

Learning Objectives

Identify features from different lines

Match drawings symbols with their meaning


Alphabet of lines

property line

border line

object line

hidden line

center line

Alphabet of Lines

UNIT 4

page 37


Alphabet of lines1

dimension &

extension lines

Alphabet of Lines

UNIT 4

page 38

23’-6”


Alphabet of lines2

long

short

Alphabet of Lines

UNIT 4

page 38

break lines


Alphabet of lines3

section identification

F

A5

sheet number

location of section

B

B

G

S12

Alphabet of Lines

UNIT 4

page 38

cutting-plane lines

direction section

is facing


Lines

Figure 4-1

Lines


Symbols

Symbols

Figure 4-2


Symbols1

Symbols

Page 253


Symbols2

Symbols

Page 253


Test your knowledge

Test Your Knowledge

UNIT 4

  • Take 5 minutes & answer questions on bottom of page 40


Line activity

Line Activity

UNIT 4

  • Take 5 minutes & draw lines in Activity 4-1 on page 41


Construction drawing symbol

Construction Drawing Symbol

UNIT 4

  • Take 10 minutes & draw the proper symbol for Activity 4-2 on page 42

    Refer to Section 7 for library of symbols

    starting onpage 253

END UNIT 4


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