diff --git a/main.py b/main.py
index 103b81b..a7b9537 100644
--- a/main.py
+++ b/main.py
@@ -1,3 +1,3 @@
 from pack import math
 a = math.perimeter()
-print(a.circle(5))
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+print(a.rectangle(5,10))
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diff --git a/pack/math.py b/pack/math.py
index d936d15..93a1caa 100644
--- a/pack/math.py
+++ b/pack/math.py
@@ -4,4 +4,13 @@ def circle(self,r):
         return 2*self.pi*r
 
     def rectangle(self,l,b):
-        return 2*(l+b)
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+        return 2*(l+b)
+    
+    def square(self,l):
+        return 4*l
+
+    def triangle(self,a,b,c):
+        return a+b+c
+    
+    def eq_triangle(self,a):
+        return 3*a
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