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

7 votes
2 answers
173 views

Is $\overline{AB} \cong \overline{BA}$ usually taught as an instance of the symmetric proper...

Recently, I began tutoring a girl in high school geometry (in California, for context). This semester of the course is starting with a pretty standard introduction to geometric proof writing. …
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