The Chamberlain garage door opener replacement safety sensors (2-Pack) help make sure your garage remains safe. The sensors project an invisible light beam across the inside of the garage door to ensure that if anything is coming in or going out, that the door automatically reverses before hitting anything or anyone. 1  Replaces defective or damaged sensors.
A traditional triangular prism is a solid figure which is made up of two triangular bases and three rectangular faces. The two triangular bases face each other and are joined together with the help of three rectangles. Triangular prism is the most useful prism in geometry as well as in optical physics.
Rectangular Prism. A polyhedron with two congruent and parallel faces and whose lateral faces are parallelograms. Prism are often distinguished by the shape of their base polygon. A prism with rectangular bases is a rectangular prism. Rectangular prism is a 3-dimensional solid object which has six faces that are rectangles. A rectangular prism has two ends and four sides. Opposite sides of the rectangular prism have the same area. A vertex is the point on 3-D shape where two or more edges meet. More than one vertex contained by a object is called vertices.