diff --git a/PeyrSharp.Core/Maths/Geometry/Rectangle.cs b/PeyrSharp.Core/Maths/Geometry/Rectangle.cs
new file mode 100644
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+++ b/PeyrSharp.Core/Maths/Geometry/Rectangle.cs
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+/*
+MIT License
+
+Copyright (c) Léo Corporation
+
+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. 
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace PeyrSharp.Core.Maths.Geometry
+{
+	/// <summary>
+	/// A class that represents a rectangle.
+	/// </summary>
+	public class Rectangle
+	{
+		/// <summary>
+		/// The Width of the rectangle.
+		/// </summary>
+		public double Width { get; init; }
+
+		/// <summary>
+		/// The Height/Length of the rectangle.
+		/// </summary>
+		public double Height { get; init; }
+
+		/// <summary>
+		/// Creates a <see cref="Rectangle"/> from a specific width and height.
+		/// </summary>
+		/// <param name="width">The width of the rectangle.</param>
+		/// <param name="height">The height/length of the rectangle.</param>
+		public Rectangle(double width, double height)
+		{
+			// Assign properties to their values
+			Width = width;
+			Height = height;
+		}
+
+		/// <summary>
+		/// Gets the area of this <see cref="Rectangle"/> from its <see cref="Width"/> and <see cref="Height"/>.
+		/// </summary>
+		public double Area => Width * Height;
+
+		/// <summary>
+		/// Gets the perimeter of this <see cref="Rectangle"/> from its <see cref="Width"/> and <see cref="Height"/>.
+		/// </summary>
+		public double Perimeter => 2 * (Width + Height);
+
+		/// <summary>
+		/// Gets the diagonal of this <see cref="Rectangle"/> from its <see cref="Width"/> and <see cref="Height"/>.
+		/// </summary>
+		public double Diagonal => Math.Sqrt(Math.Pow(Width, 2) + Math.Pow(Height, 2));
+	}
+}