watwawta

These arethick and dark lines used to represent the visible outline and edges of the object.

Dashed lines used to indicate edges or surfaces that are not visible in a 

particular view but exist in other views.

Long, short-dashed lines used to 

indicate the center of symmetrical 

objects or features.

Thin lines that 

extend from the object to show the points to which a dimension applies.

Lines composed of arrowheads, a thin line, and numerical values indicating the size of the 

object. They run parallel to the 

dimension and between extension lines. 

Lines with an 

arrowhead or dot at one end used to point to specific features or 

annotations. Leaders Are Often accompanied by a node or label.

Thin lines with 

diagonal hatching used to indicate a sectional view, 

showing the interior details of an object.

Lines consisting of long dashes 

followed by two short dashes, used to represent 

alternate positions or repeated detail.

Lines used as 

references for 

locating features, angles, or 

distances. They can be thin and light.

Lines with arrows at each end that show the 

location and 

direction of the imaginary cutting plane for sectional views.