How can I get the measurement of the length of two line segments and the angle between the lines?

I am very new to ImageJ and not too familiar with script writing so sorry for the simple question. I am trying to use a camera to capture an image of a bent object. The measurement that I need is the distance from the base to the bend, the distance from the bend to the end, and the bend angle in between. While I can simply take individually measure these parameters, I was wondering if there was a simpler way that will expedite the process.

I simply want to measure AB,BC, and angle ABC quickly. Is there any easy way to do this?

What about the “angle tool”?