National STEM Standards
STEM.M. MATHEMATICS: National Council of Teachers of Mathematics
3.1. Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships.
3.1.1. Identify, compare, and analyze attributes of two- and three-dimensional shapes and develop vocabulary to describe the attributes.
3.3. Apply transformations and use symmetry to analyze mathematical situations.
3.3.3. Identify and describe line and rotational symmetry in two- and three-dimensional shapes and designs.