For questions about geometric shapes, congruences, similarities, transformations, as well as the properties of classes of figures, points, lines, angles.

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Is the hesse normal not a popular description for a line,plane?

I looked up the "hesse normal form" for lines/planes on Wikipedia. It covers this topic in only 3 languages. Why is the hesse normal form not more prominent ? Or is it also known under a different ...
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Linear algebra and geometric insight: a rigorous approach to vector spaces, matrices, and linear applications

Could you point out some references (undergraduate level) that give a geometric understanding of vector spaces, matrices, and linear applications? As far as I know, many textbooks start with an ...