function setup() {
createCanvas(400, 400);
//noLoop();
frameRate( 2 );
}
function draw() {
var dy, dx, n;
dx = 30;
dy = 80;
n = 3;
for( var i = 0; i < n; i++ )
{
Triunghi( 200, 20 + i * dy, 120 - i * dx, 120 + i * dy, 280 + i * dx, 120 + i * dy, "green" );