RIScov.pag

Dividing a Circle

into Equidistant Intervals

H

ERE’S HOW TO DIVIDEthe circumference of a disc into equally
spaced intervals. First, draw a series of parallel equidistant lines
across a large sheet of paper. The distance between the lines should be
slightly less than the smallest interval you will normally use. Number
the lines starting with line 0, 1, 2, 3, and so on. Now wrap a length of
tape around the disc, mark where the ends overlap, and remove the
tape. Assuming the number of desired intervals is seven, for example,
you would lay the tape diagonally across the sheet so that line 0 inter-
sects one end of the tape and line 7 intersects the mark denoting the
circumference. Now mark where each intermediate line intersects
your tape for accurate equidistant intervals without measuring.
Rewrap the tape around the disc and transfer the marks from the tape
to the disc.
—KATHLEENWISSINGER,Elkton,Va.

CHAPTER SIX

Lay tape diagonally

across lined paper

beginning on line 0.

Mark that

denotes

circumference

Mark where lines

intersect tape.