What is a quadateral?

Can you have cpvc in plenum rated ceiling? Circumference of a 4' radius circle? Are the only geometric objects that can be defined using the locus of points are straight lines circles and angle bisectors? What are facts about hexagons? What is the area of a rectangle that is 20cm tall and 50cm wide? How many square feet in 120x55? What is the volume of a ball that's diameter is 5 inches? The square of 5 is 25 The square of another number is also 25 what is the other number? What is purple and looks like a bucket? How can you determine the sum of the exterior angles of a given polygon? How many square feet in 0.52 acres? How big of a lot would be an acre and a half? How many squares are shaded to show two thirds on a 70 square grid? What is a quadrant on a graph? What the geometry of N2H4? What angle is LEWIS PIN holes put in stone? A circle has a diameter of 7cm what is it's area and circumstance? How many sides did the Myans Pyramid have? Does a moon have line rotational symmetry? What is the least surface area of a rectangular prism?