Its key to copying a specified line is to open your beacon to the length of both the section, then use that amount of entrance to label off another section of the same length.
To bisect a segment or angle means to divide it into confocal scanning parts. A line segment's bisector would then pass thru the midpoint of its segment.
Once copying a segment as well as bisecting a section, its Draw a ray including one end-point step will be the same.
So if copying a line and bisecting a line segment, this same needle of both the compass is placed mostly on-line segment's end.
Therefore, the "Draw a ray with one endpoint" choices are correct, and the other choices were incorrect.
X=80 because the square it cut in half so both triangles have the same measure in angles a square has to equal 180 the two measure Gaven are 80 and 20 which makes 100 .180-100=80 x=80
