Question

mikla began with the figure shown.
she completed the following actions to construct the angle bisector of $\angle abc$, but made a mistake in one of the steps. select the step in which her mistake was made.
step 1: she placed the compass on point b and drew an arc which intersects ray ba at point d and ray bc at point e.
step 2: next, she placed the compass on point d and drew an arc on the interior of $\angle abc$.
step 3: then, she placed the compass on point c and drew an arc on the interior of $\angle abc$, which intersects the previous arc.
step 4: she labeled the intersection of the two arcs as point f and drew the ray bf, which represents the angle bisector of $\angle abc$.

Explanation:

To construct an angle bisector, after drawing the initial arc from the vertex (Step 1), the next step should be to place the compass on the intersection points (D and E, not D and C) to draw arcs. In Step 2, she placed the compass on D, but should have used E (or both D and E with equal radius). So Step 2 has the mistake as the arc should be drawn from both intersection points of the first arc with the angle's sides, not just one.

Answer:

Step 2: Next, she placed the compass on point D and drew an arc on the interior of ∠ABC.