What does Conway mean by "length" of a triangle? I'm reading Conway's complex analysis book and on page 103/104, he said:



I didn't understand why he meant by "length of T" and why $|g(z)|\le \epsilon/l$ for any $z$ on $T_1$ and because of that $|\int_{T_1}g|\le \epsilon$.

As explained at the bottom of p. 100 in the book, the length of a triangle is the length of its perimeter.
