Answer:
If a 60-degree angle is bisected twice, each bisecting line will create two new angles.
The first bisecting line will divide the 60-degree angle into two equal angles. Each of these angles will measure 30 degrees.
The second bisecting line will divide each of these 30-degree angles into two equal angles. Each of these angles will measure 15 degrees.
Therefore, after bisecting a 60-degree angle twice, each constructed angle will measure 15 degrees.
Explanation: