Code Golf: Triforce

Answer 1

F#, 184 181 167 151 147 143 142 133 chars

let N,r=int(stdin.ReadLine()),String.replicate
for l in[0..N*6-1]do printfn"%s%s"(r l" ")(r(N-l/6)((r(11-l%6*2)"*")+(r(l%6*2+1)" ")))

Bonus, 215 212 198 166 162 158 157 148 chars

let N,r=int(stdin.ReadLine()),String.replicate
for l in[0..N*6-1]@[N*6-1..-1..0]do printfn"%s%s"(r l" ")(r(N-l/6)((r(11-l%6*2)"*")+(r(l%6*2+1)" ")))