What kind of triad would this make?

I am analyzing some basic piano music for fun because I know a bit
about music theory, and I find it fascinating, but I came across a
triad I don't know how to name. What would a triad with the first, the
second, and the seventh scale degree be? (F, G, and E)
Alternately, what would you call a triad with the first, the second,
and the sixth scale degree? (F, G, and D)