Unit 12. Geometric Figures

  1. Polygons and other flat shapes

  2. Triangles

  3. Cordovan triangles and related shapes

    • Cordovan triangles
    • Cordovan rectangles
    • Cordovan rhombuses
    • Cordovan trapeziums
  4. Quadrilaterals

  5. Basic geometry elements

    • Relationships between angles and sides
    • Building triangles
    • Medians of a triangle. Centroid.
    • Altitudes of a triangle. Orthocenter
    • Circumference of a triangle
  6. Circle and Circumference

    • Relative position of a straight line with respect to a circumference.
    • Relative position of two circumferences.
  7. Symmetry

  8. Polyhedral

  9. Solids of revolution