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Steffan says:

"Value of the blue arrow take away the value of the green arrow gives you the silver arrow number."

True, but what are you doing geometrically?

Here are a couple of audio/video clips showing geometrical calculations completed using the double arrow notation.

"Value of the blue arrow take away the value of the green arrow gives you the silver arrow number."

True, but what are you doing geometrically?

Here are a couple of audio/video clips showing geometrical calculations completed using the double arrow notation.