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Outline

  1. Y9 Geometry Rules
    1. Rule 1: Adjacent angles on a straight line
    2. Rule 2: Angles around a point
    3. Rule 3: Vertically Opposite Angles
    4. Rule 4: Angles in a triangle
    5. Rule 5: Base angles of isosceles triangle
    6. Rule 6: Angles of an equilateral triangle
    7. Rule 7 : Angles in a quadrilateral
    8. Rule 8: Corresponding Angles on parallel lines
    9. Rule 9: Alternate Angles on parallel lines
    10. Rule 10 : Co-interior angles on parallel lines

Y9 Geometry Rules

Author:Anton Coltham
Topic:Geometry
Geometry Rules for Y9 (NZ)

  • Rule 1: Adjacent angles on a straight line

  • Rule 2: Angles around a point

  • Rule 3: Vertically Opposite Angles

  • Rule 4: Angles in a triangle

  • Rule 5: Base angles of isosceles triangle

  • Rule 6: Angles of an equilateral triangle

  • Rule 7 : Angles in a quadrilateral

  • Rule 8: Corresponding Angles on parallel lines

  • Rule 9: Alternate Angles on parallel lines

  • Rule 10 : Co-interior angles on parallel lines

Next
Rule 1: Adjacent angles on a straight line

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