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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for arithmetic operations ...

3. Polygonal number - Wikipedia

   en.wikipedia.org/wiki/Polygonal_number

   In mathematics, a polygonal number is a number that counts dots arranged in the shape of a regular polygon [1]: 2-3 . These are one type of 2-dimensional figurate numbers . Polygonal numbers were first studied during the 6th century BC by the Ancient Greeks, who investigated and discussed properties of oblong , triangular , and square numbers ...

4. List of polygons - Wikipedia

   en.wikipedia.org/wiki/List_of_polygons

   In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain. These segments are called its edges or sides , and the points where two of the edges meet are the polygon's vertices (singular: vertex) or corners .

5. File:Matrix chain multiplication polygon example.svg - Wikipedia

   en.wikipedia.org/wiki/File:Matrix_chain...

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6. List of polygons, polyhedra and polytopes - Wikipedia

   en.wikipedia.org/wiki/List_of_polygons...

   A polytope is a geometric object with flat sides, which exists in any general number of dimensions. The following list of polygons, polyhedra and polytopes gives the names of various classes of polytopes and lists some specific examples.

7. FAA announces temporary restrictions on drone flights in New ...

   www.aol.com/faa-announces-temporary-restrictions...

   The Federal Aviation Administration issued temporary flight restrictions prohibiting drone flights over parts of New Jersey following an influx of sightings in recent weeks.. The notice, which ...