Quick
Answer:
Trace the rim of the piece of a plate on
a sheet of paper. Fold the tracing of the rim onto itself
to form a crease in the paper. Repeat this process using
a different part of the arc. The
point where the two creases intersect is the center of
a circle. This circle is the same size as the original
plate. (You can use a compass to complete the
circle.)


Complete
Solution:
Trace the piece of a plate on a sheet of
paper. Fold the tracing of the edge of the plate onto
itself to form a crease in the paper. Repeat this process
using a different part of the arc. The
folds are along lines of symmetry for the circle that
describes the shape of the original plate.
These lines of symmetry contain diameters of the circle
and meet at the center. The plate’s radius is the
distance from the center to the rim. Its diameter is twice
the radius.

