Called a straight edge
Ruler
In construction, all you need is a compass and a ruler.
Nothing, a straightedge is a ruler. Straightedge is just another name for a ruler. You can also draw straight lines with things such as the side of a folder or anything else with a flat edge.
Coplanar lines that do not intersect are called parallel lines.
They are called millimeter lines.
you read a ruler by conting the little lines first
Because he rules People "rule" lines - Wikipedia
If the lines are on the opposite side of the inches on the ruler, then yes. You must keep in mind, however, that a ruler is used for inches and that the centimeters may not be marked.
The "tiny lines" that make up an inch on a ruler are centimeters.
The large lines indicate a kilometer per big line thingy
Usually just marks or lines. Depending which large lines you are talking about, they could be inches, centimeters, feet, decimeters, yards, or meters.
Typically the smallest lines are a sixteenth of an inch apart. Some rulers may show thirty-seconds or sixty-fourths of an inch.
why are the division lines on a ruler diffrent lengths
Those little lines above or below a music staff are called ledger lines.
There are 10 milimeters in 1 centimetre. The numbers on a ruler are usually centimeters. The little un-numbered lines that divide up the centimeters mark the milimeters.
"A ruler, sometimes called a rule or line gauge, is an instrument used in geometry, technical drawing, printing and engineering/building to measure distances and/or to rule straight lines. Strictly speaking, the ruler is essentially a straightedge used to rule lines[citation needed], but typically the ruler also contains calibrated lines to measure distances"