I know math states that a number line is one dimension but I never understood how it exists outside the math concept.
In: Biology
It’s not meant to be a representation of an entire thing in real life. Just remember what a spatial dimension is– a measurement of the distance between two points. Yes a ruler is a 3-dimensional object, but you care most about the length.
The concepts you learn in geometry are simplified from reality so you can understand them better. If the teacher were to preface with something like “Well, nothing is actually this perfect, there’s no such thing as a 1-dimensional object, or completely straight infinite lines,” etc. then it would just be a waste of time. What’s important is knowing when to apply such little tidbits to solve real-life problems.
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