From the Latin "to agree", it describes 2 figures that coincide when superimposed
It's any system of geometry not based on the system in "Elements", a book from around 300 B.C.
On the centigrade scale, it's the melting point of ice
1 volt times 1 amp equals this unit
Forces like gravity are measured in units abbreviated N., named for this scientist
To convert kilograms into grams, multiply by this
Musical instruments are tuned to 440 cycles per second, this note on a piano
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