Can you help me out?

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual 

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.

The length of the line segment ac is 8x-9 what is the value of x