What is the name of Euclid's Elements thirteenth book?

Answer None of the books of Euclid's "Elements" are named. The 13th and final book of the influential works on classical geometry focuses on Platonic solids and, like the 12th book, contains 18 unique pro... Read More »

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What Are the Elements of a Good Book Cover?

Many colors and titles blur together as a consumer peruses a shelf in a book store. Each book cover has been strategically designed for catching a book lover's eye. Unlike television's visual image... Read More »

How do I delete Adobe Photoshop elements 5 without effecting Elements 7?

New Software is SafeDeleting an earlier version of Photoshop Elements will not effect the most current version of the software installed on your computer. The earlier version will have contained le... Read More »

Do hotels have a thirteenth floor?

Hotels in the United States typically don't have a thirteenth floor labeled. According to superstition, the number 13 carries bad luck. Rather than create a floor where guests might be reluctant to... Read More »

Why is Friday the thirteenth unlucky?

You no doubt have at least the subconscious awareness that when Friday the thirteenth appears on the calendar, you may be better off staying indoors...or perhaps in an open area free of dangerous o... Read More »