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F A5
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Unit 4Unit 4Lines & SymbolsLines & Symbols
Identify features from different linesMatch drawings symbols with their meaningIdentify features from different linesMatch drawings symbols with their meaning
Learning ObjectivesLearning Objectives
page 37page 37
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Alphabet of LinesAlphabet of Lines
property lineproperty line
border lineborder line
object lineobject line
hidden linehidden line
center linecenter line
UNIT 4page 37UNIT 4
page 37
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Alphabet of LinesAlphabet of Lines
dimension & extension linesdimension & extension lines 23’-6”
UNIT 4page 38UNIT 4
page 38
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Alphabet of LinesAlphabet of Lines
break linesbreak lineslonglong
shortshort
UNIT 4page 38UNIT 4
page 38
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Alphabet of LinesAlphabet of Lines
FA5
direction section is facing
direction section is facingsection identificationsection identification
sheet numberlocation of section
sheet numberlocation of section
GS12
B B
cutting-plane linescutting-plane lines
UNIT 4page 38UNIT 4
page 38
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Lines Lines Figure 4-1Figure 4-1
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SymbolsSymbolsFigure 4-2Figure 4-2
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SymbolsSymbols Page 253Page 253
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SymbolsSymbols Page 253Page 253
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Test Your KnowledgeTest Your Knowledge
Take 5 minutes & answer questions on Take 5 minutes & answer questions on bottom of bottom of page 40page 40
UNIT 4UNIT 4
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Line ActivityLine Activity
Take 5 minutes & draw lines in Take 5 minutes & draw lines in Activity 4-1Activity 4-1 on on page 41page 41
UNIT 4UNIT 4
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Construction Drawing SymbolConstruction Drawing Symbol
Take 10 minutes & draw the proper symbol Take 10 minutes & draw the proper symbol for for Activity 4-2Activity 4-2 on on page 42page 42
Refer to Refer to Section 7Section 7 for library of symbols for library of symbols
starting onstarting on page 253page 253
END UNIT 4END UNIT 4
UNIT 4UNIT 4