Sangaku
01
算额, 传统的日本几何谜题
a traditional Japanese geometric puzzle or problem that was historically displayed on wooden tablets called "sangaku" at Shinto shrines and Buddhist temples
例子
He spent hours trying to solve the sangaku puzzle that his grandfather had passed down.
他花了几个小时试图解决他祖父传下来的算额难题。
The sangaku in the shrine was so complex that only a few mathematicians were able to decipher it.
神社里的算额非常复杂，只有少数数学家能够解读它。
