<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="1.4.js"></script>
<script>
var a=parseInt(prompt('第一条边'));
var b=parseInt(prompt('第二条边'));
var c=parseInt(prompt('第三条边'));
if((a+b>c)||(a+c>b)||(b+c>a)){
if(a=b && b=c){
document.write("等边三角形");
}
else if((a * a == b * b + c * c)||(b*b == a*a+c*c)||(c*c == a*a+b*b)){
document.write("直角三角形");
}
else if(a==b||b==c||a==c){
document.write("等腰三角形");
}
else{
document.write("其他三角形");
}
}
</script>
</head>
<body>
</body>
</html>