Texas Essential Knowledge and Skills Teaching Resources

Math 2.8

Geometry and measurement. The student applies mathematical process standards to analyze attributes of two-dimensional shapes and three-dimensional solids to develop generalizations about their properties. The student is expected to:

  • (1) create two-dimensional shapes based on given attributes, including number of sides and vertices;
    • (A) classify and sort three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangular prisms, based on attributes using formal geometric language;
    • (B) classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices;
    • (C) compose two-dimensional shapes and three-dimensional solids with given properties or attributes; and
    • (D) decompose two-dimensional shapes such as cutting out a square from a rectangle, dividing a shape in half, or partitioning a rectangle into identical triangles and identify the resulting geometric parts.

Topics in Math 2.8

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