Segments & Lengths
Segment arithmetic, midpoints, bisectors, and line segment relationships — 1D geometry without angle measurement
Angles
Angle relationships (supplementary, complementary, vertical), parallel line angles, and interior angle sums of polygons
Triangles
Triangle area, Pythagorean theorem, angle sums, congruence, and similarity — excludes general area/perimeter of other shapes (see area-perimeter-composite)
Circles
Circumference, area, arcs, sectors, central angles, and radius/diameter — excludes composite shapes involving circles (see area-perimeter-composite)
Polygons
Properties of quadrilaterals, regular polygons, and symmetry
Coordinate Geometry
Plotting points, distance, midpoint, and slope on the coordinate plane — excludes graphing linear equations (see linear-graphing)
Transformations
Reflections, rotations, translations, and symmetry
Area, Perimeter & Composite Shapes
Calculating perimeter and area of rectangles, squares, parallelograms, trapezoids, and composite/irregular shapes — excludes circles (see circles) and triangles (see triangles)
Volume & Surface Area
Calculating volume and surface area of prisms, cylinders, cones, and spheres
Visual & Spatial Reasoning
Non-coordinate spatial reasoning: net folding, cube counting/painting, paper folding, figure rotation recognition, and 3D visualization — excludes coordinate-based transformations (see transformations)