Skill 1 of 13
In Progress

Coordinate systems

A crucial detail for pointing out a position such as $\vec s=(15,20)\, \mathrm{cm}$ on a map is where to start. And also, which ways to count those $15\,\mathrm{cm}$ out and $20\,\mathrm{cm}$ in. We need a reference!

We can pick a corner and follow the map edges. Let’s fittingly call that corner the origin and the edges axes. All in all, this is our coordinate system, because we now know how to interpret the coordinates.

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