diff --git a/w5-黄志楷-202506050318/Triangle.java b/w5-黄志楷-202506050318/Triangle.java
new file mode 100644
index 0000000..e3eae33
--- /dev/null
+++ b/w5-黄志楷-202506050318/Triangle.java
@@ -0,0 +1,12 @@
+package w5;
+
+public class Triangle extends Shape{
+    Triangle(double l,double h){
+        super(l,h);
+    }
+    @Override
+    protected double getArea(){
+        area=l*h/2;
+        return area;
+    }
+}