To connect two linear forms in an L form

Select the Connect Forms as L (Bisector) tool.
Enter a data point to identify the first linear member to be connected. The end point of the member closest to the data point will extend or shorten to its intersection with the second member.
Enter a data point to identify the second linear member. The end point of the member closest to the data point will extend or shorten to its intersection with the first member. The connection highlights.
The connection highlights
Click to accept or reset.