How do you cut trim so it comes out at an odd angle?

Trish Burton
by Trish Burton

I want to put wainscoting on my entry walls and would like to put some decorative trim above it. But the walls are not 90 degree angles it is more like a 135 degree angle or so. I would like to attempt myself vs. having a professional or a handyman do it. Any advice would be great !

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