|pt| a point is approximately 1/72.27 inch, that means about 0.0138 inch or 0.3515 mm (exactly point is defined as 1/864 of American printer’s foot that is 249/250 of English foot)|
mm a millimeter
cm a centimeter
in inch
ex roughly the height of an 'x' (lowercase) in the current font (it depends on the font used)
em roughly the width of an 'M' (uppercase) in the current font (it depends on the font used)
mu math unit equal to 1/18 em, where em is taken from the math symbols family
##### Units
The next table list the valid units used on LaTeX [^1].
| Abbreviation | Value |
|--------------|--------|
| `pt` | a point is approximately 1/72.27 inch, that means about 0.0138 inch or 0.3515 mm (exactly point is defined as 1/864 of American printer’s foot that is 249/250 of English foot)|
|`mm`| a millimeter|
|`cm`| a centimeter|
|`in`| inch|
|`ex` |roughly the height of an 'x' (lowercase) in the current font (it depends on the font used)|
|`em` |roughly the width of an 'M' (uppercase) in the current font (it depends on the font used)|
|`mu` |math unit equal to 1/18 em, where em is taken from the math symbols family|
[^1]: Extracted from [Overleaf](https://www.overleaf.com/learn/latex/Lengths_in_LaTeX)
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### Day 2: Document Classes and Sectional Units ###
### Day 3: Equations, Tables and Figures (Marx) ###
