New Mexico Standards
NM.G. Geometry: Students will understand geometric concepts and applications.
K-4.G.1. Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships.
3.G.1.1. Describe and compare the attributes of plane and solid geometric figures to show relationships and solve problems:
3.G.1.1.b. Identify lines of symmetry in two-dimensional shapes
K-4.G.3. Apply transformations and use symmetry to analyze mathematical situations.
3.G.3.2. Identify and describe the line of symmetry in two- and three-dimensional shapes.