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What are 2-D vectors?

Topics in What are 2-D vectors?

Numbered in the order to learn them.

  1. What is $i$?

  2. 2-D "cross product" in terms of sine

  3. Side midpoints and the medial triangle

  4. What is a linear transformation?

  5. Extension: Mass points

  6. Recap: Properties of perpendicular bisectors

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