The choises are

4.2

4.25

4.5

4.8

Solving algebraic equations 2m+3=11

Ithink i know it but i want to be sure so can you me out ?

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.