9th Geometry Chapter List 9th Geometry Ch 1. Lines And Angles → Ch 2. Triangles → Ch 3. Congruence of Triangles → Ch 4. Circle → Ch 5. Quadrilaterals → Ch 6. Co-ordinate Geometry → Ch 7. Geometrical Constructions → Ch 8. Trigonometry → Ch 9. Mensuration → Did this chapter match your Syllabus ? 👍 Match 👎 Not Match