You can convert the Photoshop custom shapes file to SVG. The shapes can be used also in Illustrator.

How To Load And Edit Vector Shape In Photoshop?
--- After loading the CSH file in Photoshop (Edit > Preset Manager > Custom Shapes > Load), add the shape using the Photoshop Custom Shape Tool .
--- CSH file in Photoshop (Edit > Preset Manager > Custom Shapes > Load), add the shape using the Photoshop Custom Shape Tool .

How To Make A Triangle Shape In Photoshop?
--- You can create a triangle shape in Photoshop using the Polygon Tool; set the Sides to 3 sides or points.
--- Then, you can combine the triangle shapes using the Custom Shape Tool to create interesting new shapes.

The triangle Photoshop shapes are easy to edit:
In Photoshop edit shape after drawing using these tools: Pen Tool, Convert Point Tool , Add Anchor Point Tool , etc.

How To Change The Size Of A Shape In Photoshop?
The triangle vector shapes can be resized without loosing quality.

How to resize a shape in Photoshop?
Easy, press Control-T to modify the size of the vector shape.

The Photoshop vector can be used in print materials just like the vector graphics.