Identify relationships between the sides of a polygon, including parallel, equal length, or perpendicular, by measuring.
Identify relationships between angles within a polygon, including equal, supplementary, complementary, and sum of interior angles, by measuring.
Identify relationships between the faces of three-dimensional models of prisms, including parallel or perpendicular, by measuring.
Classify triangles as equilateral, isosceles, or neither using geometric properties related to sides.
Classify triangles as right, acute, or obtuse using geometric properties related to angles.
Classify quadrilaterals in a hierarchy according to geometric properties.