MA27-12 Maths Coming soon
Writing formal geometrical reasoning across lines, polygons and circles (Higher)
MA27-12
This lesson is coming soon.
In this lesson
Provide reasons, using standard geometrical statements, to support numerical values for angles in any geometrical context spanning lines, polygons and circles together, choosing between the model phrase and accepted variants.
What it covers
- Writing a standard geometrical statement as a reason, across lines, polygons and circles together in a single question
- The one 'model' accepted phrase plus one or two accepted variants for a given fact
Key words
For: Edexcel IGCSE 4MA1
On the specification
| Board | Spec | Statement |
|---|---|---|
| Edexcel IGCSE 4MA1 | H4.7A | Provide reasons, using standard geometrical statements, to support numerical values for angles obtained in any geometrical context involving lines, polygons and circles |
For teachers
This GCSE Maths lesson teaches writing formal geometrical reasoning across lines, polygons and circles (Higher). By the end, students should be able to provide reasons, using standard geometrical statements, to support numerical values for angles in any geometrical context spanning lines, polygons and circles together, choosing between the model phrase and accepted variants. It works through two worked examples and the mistakes examiners report.