Done- geometry homework

geom.js

@@ -1,17 +1,48 @@
 class Rectangle {
+  //constructor take a length and width
   constructor(length, width) {
     this.length = length;
     this.width = width;
   }
-}
-
+  // method isSquare
+  isSquare(){
+     return this.length === this.width;
+  }
+  // calculatesArea method
+  calculatesArea(){
+       return this.length*this.width;
+  }
+//calculates the perimeter of the rectangle
+  calculatesPerimeter(){
+     return (2*this.length)+(2*this.width);
+  }
+}// end class rectangle
 
+// Triangle
 class Triangle {
   constructor(sideA, sideB, sideC){
     this.sideA = sideA;
     this.sideB = sideB;
     this.sideC = sideC;
   }
+  // method isEquilateral() return true if al side equal
+  isEquilateral(){
+    return this.sideA === this.sideB === this.sideC;//return 
+  }
+  // true if at least tow side is equal
+  isIsosceles(){
+     return this.sideA === this.sideB || this.sideB=== this.sideC||this.sideA === this.sideC;
+  }
+  // method calculatesArea
+  calculatesArea(){
+     let s=(this.sideA+this.sideB+this.sideC)/2; // assign the semi-perimeter of the triangle
+     return Math.sqrt((s*(s-this.sideA))*(s-this.sideB)*(s-this.sideC));// return area
+  }
+
+  //check sideA^2 + sideB^2 less than sideC^2
+  isObtuse(){
+    return (Math.pow(this.sideA,2)+Math.pow(this.sideB,2)) < (Math.pow(this.sideC,2));//return true or false
+  }
 }
 
 
@@ -22,6 +53,10 @@ class LineSegment {
     this.x2 = x2;
     this.y2 = y2;
   }
+  // calculate the distance between two points
+  length(){
+    return Math.sqrt((Math.pow(this.x1-this.x2,2))+(Math.pow(this.y1-this.y2,2)));
+  }
 }
 
 // NOTE: DO NOT REMOVE OR ALTER

spec/geometry_spec.js

@@ -4,6 +4,13 @@ var Triangle = Geom.Triangle;
 var LineSegment = Geom.LineSegment;
 
 describe('Rectangle', function() {
+      //foo
+  // beforeEach(function(){
+  //  foo=1
+  // });
+  // afterEach(function(){
+  //  foo=0;
+  // });
   it('is a class that is defined', function () {
     expect(Rectangle).toBeDefined()
   })