【Haichuan Teahouse】Brain-teasing Series: Let’s try a geometry problem too – selected for grade 8
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This post was last edited by Desert Fish on 2021-11-6 09:05
As a hint, draw a high auxiliary line – these two triangles are congruent.
……There is an error in the description of the given conditions; it should be that CE is perpendicular to AD. What is shown in the diagram is correct: lol
Haha, I stole the image from the internet without reading it carefully; it’s just an interesting puzzle~
It’s still somewhat interesting. However, it is a bit difficult to prove that the two shaded triangles in the diagram are congruent
Since the hint indicated a thick line, I deliberately misled people regarding the shadow, but you saw through it; P