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Saturday, December 16, 2006

Approximating a square

Materials:

  • a rectangular piece of paper
  • a hard working surface (eg. table top)
Instructions:

  1. Take a rectangular piece of paper.
    square_approx_01

  2. Fold the paper at right angles. In the example below, the left edge of the page aligns perfectly with the top edge of the page.

    square_approx_02

  3. Lay the folded paper to look like the photo below.

    square_approx_03

  4. Fold the left edge over, using the vertical edge of the folded triangle as a guide.

    square_approx_04

  5. Align the bottom edge of the left flap with the bottom edge of the folded triangle.

    square_approx_05

  6. To look like this:

    square_approx_06

  7. Undo the folded left flap. Your sheet should look like this.

    square_approx_07

  8. Cutting along the folded vertical edge will give you a good approximation of a square!


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