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You can construct what mathematicians call a fair ruler (also known as a geometric ruler or a number line) using which set of tools?

Astraightedge and protractor
Bonly a metric ruler
Cstraightedge and compass
Dnone of the above

Verified Answer :

Let us first try to construct.

We shall draw a line using a straight edge.

Now we measure a small length on compass.

Place the compass at the initial point and cut an arc on the line.

Then we place the compass on the first arc and draw the second arc.

We repeat this process for the number of standard units we wish to make the ruler.

Hence we need a straight edge & a compass to make a fair ruler.

Option C) is the right answer.

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