In each box, there is one number that doesn’t belong with all the rest. WHY do you think that number doesn’t fit with the other numbers in that box? I really need help

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.