Changing Sketch Line Connected to Another Line Changes The Other's Size

Hello, when I'm making a sketch on a plane and I want two lines connecting to each other and I change one of line's size it makes it smaller/larger and also changes the other line accordingly. Is there any way to just change the size and shift the other line? Also, is it possible to type in the line's size before you click its end point?

The only way I have found this to work right is to delete all of the first line's relations.

Thanks,

Greg

SolidworksSketching