Hello, would be grateful for some help with this, my DD said they were not supposed to use protractors but a compass. It seemed to be trying to bisect a straight line by drawing to intersecting circles?? Any clues? She said she also had to use a similar method (the circles) to bisect a 60 degree angle.
I seem to remember drawing a straight horizontal line. Put the compass on the left hand side and put the pencil on the right hand side (both right at the very end of the line) the draw a circle. Swap sides and do the same again. Draw a vertical line between the points where the 2 circles intersect. It should bisect the original line.