<?php
header ("Content-type: image/png");
$im = ImageCreate (175, 175);
$grey = ImageColorAllocate ($im, 230, 230, 230);
$black = ImageColorAllocate ($im, 0, 0, 0);
$coordinates = array();
$coordinates[0] = 0; // Point 1 x
$coordinates[1] = 150; // Point 1 y
$coordinates[2] = 150; // Point 2 x
$coordinates[3] = 150; // Point 2 y
$coordinates[4] = 75; // Point 3 x
$coordinates[5] = 75; // Point 3 y
ImageFilledPolygon($im, $coordinates, 3, $black);
ImageString($im, 3, 5, 5, "Figure Triangle", $black);
ImagePng ($im);
ImageDestroy ($im);
?>