Geometry

# What is the final step in bisecting a line segment?

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### How do you divide a line into 3 equal parts?

1. Using a ruler, draw a straight line that starts at one end of
the line to be trisected (the "original" line) and forms an angle
with it that is some number of degrees less than 90. 2. Using a
compass (the drawing kind, not the navigating kind), set some
distance on it, say, 2 inches.
3. Putting the point at the intersection of the original line
and the one you just drew, make a mark with the pencil end that
intersects the line you just drew. Place the point on that
intersection point and repeat. Now move the compass and repeat
again.
4. From the point at which your third mark intersects the line
you drew in step 1, draw a straight line to the end of the original
line.
5. Using a protractor, measure the angle formed by the line you
drew at step 1 and the step 4 line.
6. With the protractor draw a line from the second mark to the
original line that has the same angle as the line in step 5.
7. With the protractor draw a line from the first mark to the
original line that has the same angle as the line in step 5.
8. Take a break!
For another method of trisecting a line segment, please follow
the link.