Geometry, Trigonometry and Vectors Repair Library

Spatial Mathematics can fail because of a missing property, weak similarity reasoning, an angle relationship, a coordinate interpretation or difficulty moving between diagrams and symbols.

• Make the geometry visible before adding more algebra.
• Reconnect similarity and ratio to trigonometric relationships.
• Use coordinates and diagrams to clarify direction and vector meaning.
• Separate diagram-reading errors from calculation errors.
• Verify on a changed figure or orientation.

The detailed internal repair catalogue is private.