alleryHow long and how marked is the idealized straightedge?
AInfinitely long with no markings
BOne metre long with markings
CTen centimetres, marked
DInfinitely long with markings
Answer & Solution
Correct answer: A. Infinitely long with no markings
1. The idealized straightedge is assumed infinite in length.
2. It has only one edge and no markings.
3. Real rulers with marks or limited length are not the idealized tool.
_Source: Wikipedia, Straightedge and compass construction, lead section_
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