### Maths.

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 acute addition angle anticlockwise apex approximate arc area arithmetic attribute average billion calculation capacity cent centimetre century chart circle circumference column compare compass concentric cone convert convex coordinates correct cube curve cylinder decimal decrease degree denominator depth diagonal diagram diamond difference digital dimension discount distance divide divisible dollar double edge estimate even fraction geometry graph hundred increase kilogram kilometre millimetre multiplication odd percentage perimeter subtraction symbol symmetry tables tessellation triangle weight whole

Some of the puzzles that people list for the public get indexed by the search engines (like Google). Some people find those puzzles and cannot figure out how to make a puzzle of their own. So this page now has the navigation sidebar.

There are now buttons on the puzzle so that you can get a clean page, in either HTML or PDF, that you can use your browser's print button to print. The PDF format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page. The PDF takes awhile to generate. Don't panic!

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