Why It's Hard to Fold a Triangle in Half (Math Chat)
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|Frank Morgan, MAA Online|
|For a circular piece of paper, the lines along which you can fold it "in half" (with half the area on each side) are precisely the lines through the center. What other shapes work the same way? This works for lots of shapes, such as rectangles, parallelograms, regular hexagons, and ellipses, but not for others, such as triangles and most irregular shapes...|
|Levels:||Middle School (6-8), High School (9-12)|
|Resource Types:||Problems/Puzzles, Articles|
|Math Topics:||Euclidean Plane Geometry|
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