Intuition about the congruence of readings of Celsius and Fahrenheit scales at -40°C [closed]

At -40°C temperature, the Fahrenheit scale also shows -40°F.

But how is this ever possible? They are two different scales! What's the intuition behind this?

closed as off-topic by WillO, user191954, stafusa, ZeroTheHero, Jon CusterSep 16 '18 at 3:41

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• Everyone who is zero inches tall is also zero feet tall. But how is this ever possible? Feet and inches are not the same thing! – WillO Sep 15 '18 at 4:06
• Similarly how can two cars travelling at different velocities be at the same point? – Mohammad Zuhair Khan Sep 15 '18 at 4:41

$$F^{\circ} = 1.8C^{\circ} + 32$$