A nonagon has nine sides and a decagon has ten sides. To understand polygons, a good understanding of other angle rules, including triangles and quadrilaterals can be helpful. The word for the name of ...

Polygons can be regular or irregular. If the angles are all equal and all the sides are equal length it is a regular polygon. To find the sum of interior angles in a polygon divide the polygon into ...

Because of supposed design difficulties with more complex shapes, do-it-yourselfers often stick to basic squares or rectangles when using landscaping timbers and railroad ties to make borders for ...

Apiarists tend to be very serious about their beehives, but one New Zealand beekeeper took his passion one step further. Roy Brewster (1905- 1978) dedicated his entire life to honeybee hive design, ...

Children’s blocks lie scattered on the floor. You start playing with them—squares, rectangles, triangles and hexagons—moving them around, flipping them over, seeing how they fit together. You feel a ...