Continue clicking the points near the bay window
- Lock the cursor in the x axis direction by pressing the U key, and click the point 9 approximately as shown in the figure (with the Alt key pressed down).
- Lock the cursor in the right-up direction in 45 degrees angle.
- Press the J key once to change the snap direction of the locked
cursor to x axis direction.
- The cursor being locked, select the point you clicked as the first point (do not press the Alt key).
