I'm trying to understand what the first and last number value in points attribute represent, but MDN doesn't seem to explain this, it actually says there needs to be two numbers, however I keep seeing this first and last pattern. I keep noticing that there are pairs of numbers, the values that represent the x and y axis of the point, however their is just a single number that isn't a pair at the beginning and end?
<svg height="210" width="500">
<polygon points="100,10 40,198 190,78 10,78 160,198">//what does first and last number mean?
<style="fill:lime;stroke:purple;stroke-width:5;fill-rule:evenodd;" />
</svg>