All-purpose Australian national anthem

All-purpose Australian national anthem; encompassing geometry, geography, geology, the monarchy, unions, democracy, agriculture, parliaments, and patriotism

(Full context found in the comments at Still Life With Cat.)

Australians all let us rejoice,
Our land is sort of square!
With triangles and pointy bits
That stick up in the air.
We also kind of have a Queen,
But she lives overseas:
Plus: unions, parliaments, and sheep,
And eucalyptus trees.
In joyful strains let us rejoice -
God save our Gracious Queen!