two out of three solved questions

geom.js

@@ -1,8 +1,28 @@
+
 class Rectangle {
   constructor(length, width) {
     this.length = length;
     this.width = width;
   }
+  isSquare(number){
+    if(Math.sqrt(number)%1===0)//check if the number is a square or not. and i'm not sure if that describes the required function.
+    {
+   return true;
+    }
+    else {
+      return false;
+    }
+
+  }
+  area(){
+    calArea=this.length*this.width ;
+    console.log(calArea);
+  }
+  perimeter()
+  {
+    calPer=2*(this.length*this.width);
+    console.log(calArea);
+  }
 }
 
 
@@ -12,10 +32,43 @@ class Triangle {
     this.sideB = sideB;
     this.sideC = sideC;
   }
-}
+  isEquilateral(){
+    if(this.sideA===60&&this.sideB===60&&this.sideC===60){
+      return true;
+    }
+    else 
+    {
+      return false;
+    }
+  }
+  isIsosceles(){
+    if(this.sideA===this.sideB){
+      return true;
+    }
+    else 
+    {
+      return false;
+    }
+  }
+  area(){
+    let semi=(this.sideA+this.sideB+this.sideC)/(2);
+  let numbers= semi*(semi-this.sideA)*(semi-this.sideB)*(semi-this.sideC);
+  Area= Math.sqrt(numbers);
+   console.log(Area);
 
+  }
+  isObtuse(){
+    if (this.sideA>90||this.sideB>90||this.sideC>90){
+      return true;
+    }
+    else 
+    {
+      return false;
+    }
+  }
+}
 
-class LineSegment {
+class LineSegment { // the last question, i dont know which equation to use 
   constructor(x1, y1, x2, y2){
     this.x1 = x1;
     this.y1 = y1;