Hidden edges in objects are represented in...

🔍 Key Concepts

• Blueprint line types and what each one usually represents (visible edges vs. hidden edges vs. centerlines) • How hidden features (holes, slots, edges you can’t see from that view) are commonly drawn in technical/engineering drawings • Difference between solid lines and dashed lines in drafting standards

💭 Think About

• First, decide: should a hidden edge look like a solid, continuous line or something broken/interrupted? Why? • Next, think about which dashed pattern (long–short vs. equal-length dashes) is more often used for centerlines and which is used for hidden edges. • Ask yourself: if you wanted to show a hole or edge that is behind the visible surface, which of these line styles would make it clear that it’s not directly seen?

✅ Before You Answer

• Eliminate any options that are clearly used for visible outlines of objects. • Recall which line type is normally used for centerlines in machine/structural drawings (this helps you rule out one dashed option). • Make sure the remaining choice is the line type that most clearly indicates features that are not directly visible in that view.

Hidden edges in objects are represented in blueprints by __________.

a thin solid line

a thick solid line

dashed lines having alternating long and short dashes

dashed lines having approximately equal length dashes

🔍 Key Concepts

💭 Think About

✅ Before You Answer