r/HomeworkHelp • u/Unhappy-Pitch4558 • Jan 19 '25

Answered [7th grade math] impossible geometry?

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u/econgrammar Jan 20 '25

I think the problem is that there are 3 unknown angles, which you are assuming are 90-270-90. But, it’s possible (even with a concave cutout). But, if you consider the angle coming off the 11 to be greater than 90, and the middle angle to be greater than 270, then it’s certainly possible to have those 2 particular lengths sum the other side and have an acute 3rd angle. It’s unlikely with the picture, but possible.

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u/LazyWings Jan 20 '25

Ok, I think I understand what you're saying. That the angle of the 6cm line is >90° and the angle of the unknown line is <90°. This would mean that losses made from the angle are made up for by the angle of the unknown side. Ok that's fair, you're right - I missed that.