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.
The Lesson: A polygon with the fewest number of sides is a triangle. A polygon in which all sides are equal in length and all angles have the same measure is called regular. We have shown that the three angles in a triangle have a sum of 180Âº. We use this fact to analyze polygons with more than three sides.