In this program
- Axiomatic systems
- Angles and parallel lines
- Triangle congruence (SAS, ASA, SSS)
- Similarity and proportional segments
- Right triangles
- Special triangles
- Circles: chords, tangents, inscribed angles, and arc measure
Euclidean foundations
Circles: chords, tangents, inscribed angles, and arc measure
Geometry · Theoretical / proof-based
Topic
Circles: chords, tangents, inscribed angles, and arc measure
Undergraduate Geometry — scope drawn from open college geometry texts and typical US Euclidean / transformational geometry syllabi.