"obtuse" in Chinese (Simplified)
钝角迟钝（人）
Definition
“Obtuse”指大于90度小于180度的角。也形容人迟钝、不敏感。
Usage Notes (Chinese (Simplified))
数学上常说“钝角”。形容人时含贬义，指理解慢或反应迟钝，易冒犯他人。不要与“肥胖”的词混淆。日常表达中较少见。
Examples
An obtuse angle measures more than 90 degrees.
一个**钝角**大于90度。
He was too obtuse to understand the joke.
他太**迟钝**了，没听懂笑话。
The triangle has one obtuse angle.
这个三角形有一个**钝角**。
Stop being so obtuse—she obviously likes you!
别这么**迟钝**了——她明显喜欢你！
Her answer was deliberately obtuse, avoiding a direct response.
她故意给了个**模糊**的答案，没有直接回应。
It's pointless to argue with someone so obtuse about details.
和一个这么**迟钝**的人争论细节毫无意义。