Constructions Lesson

Eric should have started by putting the compass needle point at the midpoint of the segment AB.

On the second step, Eric should have placed the compass needle point where the first arc intersected the segment AB.

Erick just needed to open the compass more to create arcs that have a radius of more than half the length of the segment AB.

Erick didn’t do anything wrong he just needs to connect the opposite endpoints of each arc to finish the construction.

The arc in step 1 was incorrectly constructed because it needs to intersect all sides of the triangle and not just AB and AC.

The arcs in step 1 and step 2 were incorrectly constructed because they need to have the same radii.

Step 2 is incorrect and should have been, using the same compass setting, to draw two arcs centered at points P and Q and labeling their intersection as R.