diff --git a/geom.js b/geom.js
index d942747..d5da428 100644
--- a/geom.js
+++ b/geom.js
@@ -3,15 +3,44 @@ class Rectangle {
     this.length = length;
     this.width = width;
   }
+  isSquare() {
+    return this.length === this.width ; 
+  }
+  area(){
+    return this.length*this.width
+  }
+  perimeter(){
+    return 2*this.length + this.width*2
+  }
 }
 
 
+
 class Triangle {
   constructor(sideA, sideB, sideC){
     this.sideA = sideA;
     this.sideB = sideB;
     this.sideC = sideC;
   }
+  isEquilateral(){
+    return this.sideA === this.sideB === this.sideC ;
+  }
+  isIsosceles(){
+    return this.sideA === this.sideB || this.sideB === this.sideC || this.sideA === this.sideC ;
+  }
+  area(){
+    let a = (sideA+ sideB + sideC)/2;
+let area =  Math.sqrt(a*((a-this.sideA)*(a-this.sideB)*(a-this.sideC)));
+console.log(area) ;
+  }
+  Obtuse(){
+    return this.sideA === this.sideB && this.sideA !== this.sideC || 
+           this.sideA === this.sideB && this.sideB !== this.sideC ||
+           this.sideA === this.sideC && this.sideA !== this.sideB ||
+           this.sideA === this.sideC && this.sideC !== this.sideB ||
+           this.sideB === this.sideC && this.sideC !== this.sideA ||
+           this.sideB === this.sideC && this.sideB !== this.sideA  
+  }
 }
 
 
@@ -22,6 +51,9 @@ class LineSegment {
     this.x2 = x2;
     this.y2 = y2;
   }
+  LineSegment(){
+  return (this.y2 - this.y1) / (this.x2 - this.x1);
+  }
 }
 
 // NOTE: DO NOT REMOVE OR ALTER
@@ -30,3 +62,5 @@ module.exports = {
   Triangle: Triangle,
   LineSegment: LineSegment
 }
+
+
diff --git a/spec/geometry_spec.js b/spec/geometry_spec.js
index f539663..b240046 100644
--- a/spec/geometry_spec.js
+++ b/spec/geometry_spec.js
@@ -3,7 +3,7 @@ var Rectangle = Geom.Rectangle;
 var Triangle = Geom.Triangle;
 var LineSegment = Geom.LineSegment;
 
-describe('Rectangle', function() {
+describe('Rectangle', function(height, width) {
   it('is a class that is defined', function () {
     expect(Rectangle).toBeDefined()
   })
@@ -80,3 +80,32 @@ describe('LineSegment', function() {
     expect(line.length()).toEqual(5);
   });
 });
+
+
+var y = 0 ;
+var x = 0 ;
+class ATM {
+    constructor (type, money , transactionHistory ){
+        this.type=type;
+        this.money= money ;
+        this.transactionHistory = transactionHistory 
+         
+
+    }
+    withdraw() {
+
+        this.money = this.money-1 ;
+         x-- ;
+    }
+ deposit(){
+    this.money=this.money+1
+       y++ ;
+}
+showBalance(){
+    consol.log(this.money)
+}
+transaction(){
+    console.log(" Increased by " + y + " Decreased by " + x  )
+    
+}
+}