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Finding M∠9 with M∠1 = 153° by Jenifer Obatay Dana is a document available to read on EtoBox.
This document contains lecture materials on concepts in geometry for a Math 219 course. It covers topics on parallel lines and transversals, including defining parallel lines and transversals, and discussing the angles formed between parallel lines when cut by a transversal. It also covers the triangle sum theorem, which states that the sum of the interior angles of any triangle is 180 degrees. Examples are provided to demonstrate using the theorem to find missing angle measures in triangles. Resources for
- Author
- Jenifer Obatay Dana
- Language
- EN