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# A hint to garden E.
Here's a hint to garden E.
Take the triangle on top, make a copy and rotate it about the top left corner of the square by $90^{\circ}$.
![[1 teaching/summer program 2023/puzzles-and-problems/---files/hint-to-garden-E 2023-08-16 22.43.45.excalidraw.svg]]
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Since we rotated it by $90^{\circ}$, the sides with length $80$ are perpendicular to each other....
Now take it from here.