  This paper studies various properties of amplitudes in 3d super Yang Mills
theory. First we explain how to obtain the amplitudes of 3d super Yang Mills
theories from 4d super Yang Mills theories and obtain their helicity structure.
Next, we use a 3d BFCW recursion relation to show that the tree amplitudes and
loop integrands of maximal 3d super Yang Mills have dual conformal covariance
(although not invariance, so that the amplitudes themselves are not dual
conformal). Finally, we argue that the one-loop amplitudes of maximal 3d super
Yang-Mills can be reduced to scalar box diagrams and evaluate these diagrams
using dimensional regularization. We find that the one-loop MHV amplitudes
vanish and the one-loop non-MHV amplitudes are finite.
