diff --git a/Modules/Math.il b/Modules/Math.il
new file mode 100644
index 0000000..28fda12
--- /dev/null
+++ b/Modules/Math.il
@@ -0,0 +1,124 @@
+/*
+I Language math module.
+Version: 1.0.0
+
+Copyright (c) 2023-present I Language Development.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the 'Software'),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+[doc]
+	I Language math module.
+
+	This module contains mathematical constants, functions and the complex type.
+[end]
+*/
+
+
+////////////////////
+// USE STATEMENTS //
+////////////////////
+
+use DualType;
+use SelfType;
+
+
+////////////////////////////
+// MATHEMATICAL CONSTANTS //
+////////////////////////////
+
+// [doc]: π with 100 decimal places
+const float Pi = 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679;
+
+// [doc]: e with 100 decimal places
+const float e  = 2.7182818284590452353602874713526624977572470936999595749669676277240766303535475945713821785251664274;
+
+
+//////////////////
+// COMPLEX TYPE //
+//////////////////
+
+private class Complex(Type) {
+	/*
+	[doc]
+		Complex number type.
+
+		Represented like this:
+		`1+2i`
+	[end]
+	*/
+
+	function main(DualType(int, float) real, DualType(int. float) imaginary) {
+		/*
+		[doc]
+			[args]
+				real: Real part of the complex number.
+				imaginary: Imaginary part of the complex number.
+			[end]
+
+			[example]
+				complex(1, 2);
+				// = 1+2i
+
+				complex(1.2, 2.3);
+				// = 1.2+2.3i
+
+				complex(1.23456789, 2.34567890);
+				// = 1.23+2.34
+			[end]
+
+			[warning]
+				Float values get rounded to 2 decimal places.
+				The values they were initialized with are stored in the [nobr]
+				`COMPLEX.unrounded_real` and `COMPLEX.unrounded_imaginary` properties.
+			[end]
+		[end]
+		*/
+
+
+		if typeOf(real, float) {
+			self.real = round(real, 2);
+			self.unrounded_real = real;
+		}
+		else {
+			self.real = real;
+			self.unrounded_real = real; // Used to keep have access to this property at all times
+		}
+
+		if typeOf(imaginary, float) {
+			self.imaginary = round(imaginary, 2);
+			self.unrounded_imaginary = imaginary;
+		}
+		else {
+			self.imaginary = imaginary;
+			self.unrounded_imaginary = imaginary;  // Used to keep have access to this property at all times
+		}
+
+		parent.main(self.real, self.imaginary);
+	}
+
+	string repr() {
+		return self.real + "+" + self.imaginary + "i";
+	}
+
+	Self add(Self other) {
+		return Self(self.real + other.real, self.imaginary + other.imaginary);
+	}
+}
+
+export Complex as complex;