The story of diameter
Chapter 1
The math of the middle
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Chapter 2
Sizing up the cosmos
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Chapter 3
Engineering the everyday
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YOUR GOAL
Master of The story of diameter
Ch 1 · The math of the middle
hue The Reuleaux Heptagon
My diameter's a constant as I roll across the floor, So I slip right through the slot of the vending machine door
Fun Fact
Circle's big line: The word diameter comes from the Greek 'diametros,' which translates to 'measuring through' a shape.
Glossary
radius (noun)
A straight line from the center to the circumference of a circle or sphere. In 1570, John Dee translated Euclid's work, defining this line as half of the circle's diameter.
A straight line from the center to the circumference of a circle or sphere. In 1570, John Dee translated Euclid's work, defining this line as half of the circle's diameter.
Quiz
Which ancient Greek mathematician officially defined the diameter in his famous book 'Elements' around 300 BCE?