<meta charset=UTF-8> <script src="http://spelprogrammering.nu/simple.js"> function start() { math.DDDPerspective = false; math.rotate3D(0.2,-0.1,0); math.axes3D(); a = {x: 1, y: 0, z: -3}; b = {x: 3, y: 2, z: -1}; alpha = {x: 1, y: 0, z: -1}; beta = {x: 3, y: 0, z: -3}; gamma = {x: 3, y: 0, z: -1}; math.line3D(a.x, a.y, a.z, b.x, b.y, b.z, "blue"); math.line3D(a.x, a.y, a.z, gamma.x, gamma.y, gamma.z, "red"); math.line3D(b.x, b.y, b.z, gamma.x, gamma.y, gamma.z, "red"); math.line3D(a.x, a.y, a.z, alpha.x, alpha.y, alpha.z, "gray"); math.line3D(a.x, a.y, a.z, beta.x, beta.y, beta.z, "gray"); math.line3D(gamma.x, gamma.y, gamma.z, alpha.x, alpha.y, alpha.z, "gray"); math.line3D(gamma.x, gamma.y, gamma.z, beta.x, beta.y, beta.z, "gray"); math.point3D(a.x, a.y, a.z, "green"); math.text3D(a.x-0.35, -0.1, -3.5, "p1", "green"); math.point3D(b.x, b.y, b.z, "red"); math.text3D(b.x-0.65, 1.5, -3.5, "p2", "red"); math.text3D(1.6, 0.65, -3.5, "c", "blue"); math.text3D(1.5, -0.40, -3.5, "a", "orange"); math.text3D(2.78, 0.4, -3.5, "b", "brown"); math.text3D(-3, 2, -3.5, "a² + b²= c²"); math.text3D(-3, 1.5, -3.5, "b = p2.y-p1.y"); math.text3D(-3, 1, -3.5, "a = ?"); } </script>