### 7.4 Fibonacci & Other Patterns

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• Math Help

To make a spreadsheet similar to the one in Example 4, use the steps below.

1. Enter the titles "Term" and "Ratio" in Row 1.
2. Enter 0 into cell A2 and 1 into cell A3.
3. Enter the formula = A2 + A3 into cell A4.
4. Select cell A4. From the Edit menu, choose Copy.
5. Select cells A5 through A21. From the Edit menu, choose Paste.
6. Enter the formula = A4/A3 into cell B4.
7. Select cell B4. From the Edit menu, choose Copy.
8. Select cells B5 through B21. From the Edit menu, choose Paste.
• Consumer Suggestion

The Mona Lisa is often considered the most famous painting in the world. There have been bands, movies, a hotel, restaurants and even a computer program named after Mona Lisa. Much controversy surrounds the painting, and there have been numerous attempts to deface the Mona Lisa. Check out pbs.org to read some interesting facts and myths about the Mona Lisa.

• Checkpoint Solution

Some structures that show golden ratios are the United Nations Headquarters, the Mosque of Uqba, and the Great Pyramid at Giza.

U.N. Headquarters in New York City designed by Oscar Niemeyer.

Artworks showing the golden ratio include The Sacrament of the Last Supper by Salvador Dali and some of Leonardo Da Vinci's works in De Divina Proportione.

Illustration of a human head by Leonardo Da Vinci from De Divina Proportione.

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```  ______     ___     _    _    __   __     _____
/_____//   / _ \\  | \  / ||  \ \\/ //   / ___//
`____ `   / //\ \\ |  \/  ||   \ ` //    \___ \\
/___//   |  ___  ||| .  . ||    | ||     /    //
`__ `    |_||  |_|||_|\/|_||    |_||    /____//
/_//     `-`   `-` `-`  `-`     `-`'   `-----`
`-`
```