Trapezoid

7.2 Outline

1. Angles
   1. vertex (pl. vertices)
   2. angle
   3. notation for angles
   4. equal angles
   5. degree
   6. classifications
      1. acute
      2. right
      3. obtuse
      4. straight
   7. congruent angles
   8. complementary angles
   9. supplementary angles
   10. adjacent angles
   11. vertical angles
2. Polygons
   1. definition
   2. regular polygon
   3. classifications
   4. quadrilateral
      1. classification
      2. trapezoid
      3. parallelogram
      4. rhombus
      5. rectangle
      6. square