Curriculum placement
Geometry. This describes the skill, not a learner estimate.
Precise definitions in geometry
Use precise definitions of geometric objects and relations
Problem types
- Euclidean and spherical geometry
- Choose the precise geometric definition
Builds on
- Parallel lines, perpendicular lines, and symmetry
- Categories and subcategories of shapes · Earlier idea
A shape belongs to a class when it meets the definition, so a square is a rectangle because it has all the required properties.
- Sides, angles, and faces · Earlier idea
Counting the sides and angles of a polygon becomes defining it precisely by what it must contain.
Leads to
Related skills
None listed.
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