Geometric reasoning

Angles on parallel lines
1. Corresponding angles
2. Co-interior angles
3. Alternate angles
Congruent triangles
1. SSS RHS SAS AAS
2. Formal deductive proog
Similar triangles
1. Ratios of Corresponding Sides
  1. Scale Factor
  2. Scale Ratio
2. Conditions of similarity
  1. AA
  2. RHS
  3. SSS
  4. SAS
Triangles
1. Angle sum
2. Exterior angle
3. Names
  1. Side Based names
  2. Angle based names
Angle Properties
1. Complementary Angles
2. Supplementary Angles
3. Revolution
4. Vertical Angles
Quadrilaterals
1. Parallelograms
  1. Rectangle
    1. square
  2. rhombus
    1. square
2. Trapezium
3. Kite
4. Angle sum
Polygons
1. angle sum
  Annotations:
  - For an n-sided polygon, the angle sum s = 180(n-2)

Resource summary

	Created by jpotier over 9 years ago