When used as recommended, CCA-treated wood is harmless to. people, plants, and animals. Its use provides environmental. benefits as well as decades of service. Specify Wolmanized Â® wood and plywood for applications in which conditions conducive to termites and fungal decay are present.
A quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals. The five most common types are the parallelogram, the rectangle, the square, the trapezoid, and the rhombus. Move your mouse cursor over the figures at the right to learn more.
A polygon is closed shape with equal number of angles and sides. The sides are called edges and the two sides intersect to form vertices. A polygon with n sides would have n vertices and n angles. The Greek word âoctaâ means 8 and âgonâ means angles thus a polygon with eight angles is called an Octagon. The octagon also has 8 sides and can be classified regular; irregular based on the sides lengths. It can also be classified as concave or convex type based on the internal angles. Some commonly seen octagon in real life