Lines and Symbols F A5 Unit 4

Unit 4 Lines & Symbols Learning Objectives 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 UNIT 4 page 37 property line border line object line hidden line center line

Alphabet of Lines UNIT 4 page 38 dimension & extension lines 23’-6”

Alphabet of Lines UNIT 4 page 38 break lines long short

section identification Alphabet of Lines UNIT 4 page 38 cutting-plane lines direction section is facing section identification F A5 sheet number location of section B G S12

Lines Figure 4-1

Symbols Figure 4-2

Symbols Page 253

Symbols Page 253

Test Your Knowledge UNIT 4 Take 5 minutes & answer questions on bottom of page 40

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

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 on page 253 END UNIT 4