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I don't really use blends but I played with it based on your post. The Rotational Blend allows you to rotate the additional sketch locations by a given angle. The standard blend is on parallel.
I can't find an option that allows you to turn the section as it blends in either one.
I also noticed there is inconsistency on how the blend feature works vs. the rotational blend. In the blend feature you can easily add a second sketch by choosing a button on the ribbon while on the rotational blend you must right click in the sketch area to see an option to add another sketch. This is the stuff PTC needs to clean up and make sure it's consistent across the UI.
I will be interested in what others find but I also can't find a way to rotate the sketch in the blend feature.
By the way, in Creo it's Ribbon-ized. The Dashboard is a different UI from the Ribbon. 🙂
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