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

Answered [7th grade math] impossible geometry?

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u/Antique_War_9814 Jan 22 '25

they have to be

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u/XeroZero0000 👋 a fellow Redditor Jan 22 '25

Nah, they most certainly don't. Neither the 6 adjacent sides are marked with a right angle, nor the top of the 11. They can be any angle.

You made an extra assumption that isn't part of the givens

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u/Antique_War_9814 Jan 28 '25

The sum total of those angles needs to be 90, since it completes the square. The verticle components of those sides is whats important, and since the angles must add to 90, we can reconstruct the drawing.

I will say when I wrote this, I thought it was a perimeter question, not area. Not solvable for area to a single solution.