The correct first step in copying an angle is 2) Draw a ray with one endpoint.
Here's the general process for copying an angle using a compass and straightedge:
1. Draw a ray with one endpoint: This ray will serve as the base for the new angle, and its endpoint will be the vertex of the new angle.
2. Place the compass point on the vertex of the original angle: This ensures that the width of the arc you create will be the same as the original angle's angle measure.
3. Swing an arc that intersects both sides of the original angle: This arc represents the angle measure you want to copy.
4. Without changing the compass width, place its point on the endpoint of the ray you drew in step 1: This aligns the new angle's vertex with the original angle's measure.
5. Swing an arc that intersects the ray: This arc will create a point that determines the second side of the new angle.
6. Use a straightedge to draw a line from the endpoint of the ray through the point where the arc intersects the ray: This line forms the second side of the new angle, completing the angle copy.