# RegionPlot3D not showing 2D shapes

I am trying to draw a series of regions in Mathematica (one example below), but the planes I am trying to draw with RegionPlot3D don't show anything.

For example,

RegionPlot3D[((p2 < 247/561 &&
1/147 (73 - 117 p2) <= p1 <= 1/12 (11 - 21 p2)) || (p2 == 247/
561 && p1 == 82/561)) && p3 == 1/10 (-1 + 2 p1 + 11 p2),
{p1,0,1}, {p2,0,1}, {p3, 0, 1}]


doesn't yield/show anything in the plot, but if I change p3 == 1/10 (-1 + 2 p1 + 11 p2) to p3 >= 1/10 (-1 + 2 p1 + 11 p2), then I get a (crudely drawn) 3D region.

Is there another 3D plotting option that you would recommend, or a way to make RegionPlot3D show 2d planes, but still in a 3 dimensional plot?

(I'm using Version 11 on Linux Mint)

• If you're have an issue with something, please include your operating system with version and the version of Mathematica you are using, e.g. $Version. – rcollyer Nov 27 '18 at 18:38 • I have a similar problem in Mathematica 11.3, ArchLinux. – user1747134 Feb 12 at 13:50 • Not sure if this will help, but I think I ended up solving my issue by using ParametricPlot3D instead. – jessie_fin Feb 12 at 22:02 • I have a similar problem I have r = ParametricRegion[{(-1 + p0)^2, 2 (-1 + p0) p0 (-1 + p1), p0 (p0 + 2 p1 - 2 p0 p1)}, {{p0, 0, 1}, {p1, 0, 1}}] then Region[r] returns an image but RegionPlot3D[r] only an empty box. $Version produces 11.2.0 for Linux x86 (64-bit) (September 11, 2017) – user1747134 Mar 10 at 12:46