As there is no direct snap to locate midway point between two points, we can acheive the same by using the command line calculator 'CAL. The expression to be used is "MEE" or "(end+end)/2", which stands for midpoint between two endpoints. For example, to start a new line at the midpoint between endpoints of two lines, draw two lines at an angle to each other and start the line command again and at the Specify First Point prompt enter 'cal and at the Initializing expression prompt enter mee, now selec the two points as prompted. The line initiated in step 2 will start at the midpoint between the selected endpoints, and you will be prompted for the next point.
I hope this tip will help.
I hope this tip will help.