Create the First Arc

What happens here

Take the string and hold one end firmly at the left endpoint of the straight line you just drew. Hold the Sharpie marker at the other end of the string, ensuring the string is taut. While keeping the string tight, make a small mark on the existing straight line to the right of your starting point, and then draw an arc upwards from the starting point. This establishes a fixed radius for your geometric construction.

Goal: Establish a fixed radius and the first arc of the equilateral triangle.