How to Connect a Straight Segment to a Curve Segment in Photoshop CS6
In Photoshop CS6, if you need to create a straight segment after creating a curve (or vice versa), you need to convert the point where the path changes from curved to straight. To convert a point, follow these steps:
Position your cursor over the second anchor point in the existing curve and hold down the Alt key (Option on the Mac).
A caret (which looks like an upside down V) appears next to the Pen cursor.
Click and release your mouse button over the anchor point. Also release the Alt key (Option on the Mac).
The bottom direction line disappears. You’ve converted a smooth point into a corner point with one direction line. This action now allows you to create a straight segment.
It’s no coincidence that the icon for the Convert Point tool is also a caret. Whenever you see a caret symbol in Photoshop, it’s an indication that you’re converting an anchor point, from smooth to corner or vice versa.
Move your mouse to the end of the straight edge that you want to select, and then click and release your mouse button.
You can press the Shift key while you click if you want the line to be constrained horizontally, vertically, or at an angle that’s a multiple of 45 degrees.
Photoshop connects the two anchor points with a straight segment.Credit: ©iStockphoto.com/Maxian Image #6293744