The reason that 0 degrees Celsius is equal to 32 degrees Fahrenheit is due to the different temperature scales used in Celsius and Fahrenheit. The Celsius scale is based on the freezing and boiling points of water, where 0 degrees Celsius represents the freezing point and 100 degrees Celsius represents the boiling point at sea level.
On the other hand, the Fahrenheit scale was developed separately and has different reference points. In the Fahrenheit scale, 32 degrees Fahrenheit represents the freezing point of water, and 212 degrees Fahrenheit represents the boiling point of water at sea level.
The relationship between the Celsius and Fahrenheit scales is not linear. To convert between the two scales, you need to use conversion formulas. The conversion formula from Celsius to Fahrenheit is:
°F = (°C × 9/5) + 32
So, to convert 32 degrees Celsius to Fahrenheit:
°F = (32 × 9/5) + 32 = 89.6 degrees Fahrenheit
As you can see, 32 degrees Celsius is not equal to 64 degrees Fahrenheit because the two scales have different reference points and conversion formulas.