What is the weight of mirror per square foot?

How many degress are in a straight line? What kind of triangle is never wrong? If only two dimensions of a shape is doubled what is the volume multiplied by? What is a measure of each angle formed by bisecting a right angle? How many diagonals are in a polygon with 18 sides? What is the difference between a median and the altitude of a triangle? How many diagonals in decagon? What is the area of the compact disc if the distance from its center to the edge of the disc is 6 centimeters? How many edges does a 3d pyramid have? What shape can have a polygon that is not a triangle? What is the area of a rectangle with a perimeter of 285.6 mm and base length of 78.3? Does a rhombus look like a sideways diamond? Is a trapezoid ever a rhombus? What are lines that lie in different planes? What angle does the minute hand of a clock turn through when it moves form 1 to 9? What is the purpose of the great circle sailing? You have parallel opposite sides but you are not a rectangle what are you? What does a perpendicular bisector cut of a triangle into two congruent parts? What is x-gon of the polygon? What is the diagonal measurement of an 8' X 16' rectangle?