BISECTING WITH A
COMPASS
If you have a compass (the mathematical drawing kind, not
the pointtothenorth kind), this is a simple threepart
process!
PART ONE: Mark the legs
a) Open the compass to any distance (a “medium” one works
well) and tighten it so it stays that way.
b) Place the compass point on the angle’s vertex.
c) Using the compass’s pencil, make a mark on each leg of
the angle.
PART TWO: Draw an
intersection
a) Place the compass point on the mark you made on one leg
of the angle, then draw a curve between the legs, in the
direction away from the vertex.
b) Do the same thing with the compass point on the other
mark you made. The two curves should intersect at a point.
PART THREE: Connect the
dots
Using a straight edge, connect the angle’s vertex to the
intersection of the two curves you drew. Congratulations — you
just bisected the angle!
