Lines and angles
Lines and angles is on the CBSE syllabus, which we hold as an official document. It is set in Mathematics, in Class 6 and Class 9. CBSE files it under a chapter of its own, and every row below names the document that chapter was read from, the page inside it, and the day we read it.
This page is a map, not a lesson. It says where Lines and angles sits on each board and where that came from. Wobo explains it on the board, out loud, or as a thing you drag, and none of that is on this page yet. Ask below and Wobo answers about this concept now, with no account.
Where it is taught
- CBSE · Class 6 · Mathematics
Lines and Angles
Topic, in Ganita Prakash, Grade 6
Ganita Prakash, textbook of Mathematics for Grade 6 (prelims)page 19, Contents, chapter 2 - CBSE · Class 9 · Mathematics
Lines and Angles
Topic, in Geometry
- Explain the notion of an angle
- Explain the notion of a ray
- Explain that angles are formed between two rays with a common starting point
Where this came from
Two official documents, each read in full, hashed, and named here so you can check them yourself.
- Ganita Prakash, textbook of Mathematics for Grade 6 (prelims)National Council of Educational Research and TrainingRead on 3 September 2026.Hash of the bytes we read: 902147cff853.
- Mathematics, Class IX, Secondary Curriculum Part 1, 2026-27Central Board of Secondary EducationRead on 3 September 2026.Hash of the bytes we read: 932ea66d6fbf.
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