give informal reasons, where required, when arriving at numerical solutions to geometrical problems
Reasons will only be required for geometrical calculations based on lines (including chords and tangents), triangles or polygons
give informal reasons, where required, when arriving at numerical solutions to geometrical problems
Reasons will only be required for geometrical calculations based on lines (including chords and tangents), triangles or polygons
provide reasons, using standard geometrical statements, to support numerical values for angles obtained in any geometrical context involving lines, polygons and circles