GeoGebra
GeoGebra
Y9 Geometry Rules
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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Animation 151
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