wikipedia link added

mattbnn · Feb 28, 2015 · 539c664 · 539c664
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diff --git a/_tutorials/03_graphics/generativemesh.markdown b/_tutorials/03_graphics/generativemesh.markdown
@@ -36,7  36,7 @@ The tutorial is broken into four sections:
 ##Basics: Working with ofMesh
 
 
-A mesh is a collection of **vertices** - points in 3D space - that can be connected up in different ways.  The shapes that are formed by connecting these vertices are called **primitives**.  The primitives are our smallest building blocks that we can put together to form a mesh.  We can create a couple different kinds of primitives:
 A mesh is a collection of **vertices** - [points in 3D space](https://en.wikipedia.org/wiki/Vertex_(computer_graphics)) - that can be connected up in different ways.  The shapes that are formed by connecting these vertices are called **primitives**.  The primitives are our smallest building blocks that we can put together to form a mesh.  We can create a couple different kinds of primitives:
 
 * You can choose to not connect any of your vertices and just draw points as the primitives.
 * You can choose to connect pairs of vertices and draw lines as the primitives.