How to Draw a Bowtie antenna in Comsol 4.3a

Dear all,

I want to know how to draw a bowtie antenna in comsol 4.0 or above. I tried to draw a polygon and then extrude it, But it do'nt work. In other words, I want to draw a triangluar prism in comsol.
I know that it is possible to draw a bowtie by intersecting two rotated rectangular boxes, But I want to know if there is any simpler way to do so.

Thank you all,

Abramo