The thing that easy is when you use a compass, you just open it then round it to the point cut it to a point. The hard thing is when you do a bisector because you have to make it in the middle of the angle. But perpendicular bisector is easy because you make a right angle then cut it by a compass. The parallel line is easy because you only need a ruler. A congruent line is hard because you must make 4 angles equal. The segment is very easy because it is a part of the line. Perpendicular is the easiest because you just made it be a right angle.