How Can I Set a Brush to Exactly 90° (or Other Precise Angles) in Preset Mode?

[NC9977NC]

Hello guys, I know is pretty awkward what I'm asking and I'm sorry to bother a big community for this... but how can I set once I'm using a brush in a preset mode to a 90°precisely ? Is there a way to set the brush or a keyboard shortcut? Even when I open up the brush setting window, I can choose plenty of different settings but I cannot turn it into 90°, or 180° or whatever degrees... maybe there's a an hidden path to it. Thank you 

[LAMY2017]

The trick is reading the hover hints.

Click to open the Brush Preset picker ( the second drop-down to the right of the Home icon).

Once the picker is open, pick a brush, then adjust the brush angle and roundness in the box that contains a facsimile of a brush. The two dots allow one to stretch the circle into an oval; grab the triangle to move the brush to the desired angle. Experiment with holding the Shift key as you turn the shape.

See my screen recording.

[NC9977NC]

The shift key while I rotate the arrow inside the box. I've tried but maybe my Italian keyboard isn't working as the US one. 
anyway thank you .. I will try to add an USA keyboard and see. 

[CMass]

Hey @NC9977NC, 

Let us know if you're able to use the shift key. Glad Lamy2017's response helped. 

^CM

[Trevor.Dennis]

So long as you have this preference setting enabled, the cursor keys will rotate 15° if you hold down the Shift key.

If this is something you do a lot with a specific preset, then maybe make new presets, and access them via Recent Brushes from the right click menu.  It's touch and go whether this would be quicker than rotating with the cursor keys.

 

That's all I can think of right now.