Two similar circles are shown. The circumference of the
larger circle, with radius OB, is 3 times the circumference of
the smaller circle, with radius OA.
Radius OB measures x units. Which expression represents
the circumference of the smaller circle with radius OA?

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.