Tidy up

docs/lectures/graphics/05_2d_to_3d.md

@@ -9,7 +9,7 @@
     - A cube has one vertex at each corner which are positioned relative to the centre of the cube
     - In model space there is no information about where a model is relative to anything in the world, there is only information about the relative positions of the vertices which make up the model
 - **World Space**
-    - World space is relative top a larger coordinate system
+    - World space is relative to a larger coordinate system
     - Vertices are positioned in model space and then all moved to the appropriate position in the world
 - **View Space**
     - View space has all vertices from the perspective of the viewer
@@ -17,11 +17,11 @@
 - **Clip space**
     - Clip space is an intermediate space after vertices have been projected to what is going to be drawn to the screen
 - **Normalised Device Coordinate space**
-    - NDC space is almost identical to the pixels on the screen. 
+    - NDC space is almost identical to the pixels on the screen.
     - Vertices inside the NDC space will be rendered at those positions
 - **Screen space**
     - Screen space maps directly to the pixels on the screen
-    - From now vertices can be used to construct triangles, which are rasterised and the appropriate pixels are coloured
+    - From this point, vertices can be used to construct triangles, which are rasterised and the appropriate pixels are coloured
 
 - Model Transform
     - The transformation of vertices from model space to world space
@@ -32,7 +32,7 @@
 - Perspective Division
     - The division of each component by its homogeneous $w$ component
 - Viewport Transformation
-    - The mapping of normalised coordinates to vertices at screen pixel coordinates 
+    - The mapping of normalised coordinates to vertices at screen pixel coordinates
 
 #### View Space with Frustum