What is a terhedron?

What relationship does the angle of a triangle have with its height? Why must a flat-topped stoppers be laid with their flat sides in the table? Is 82 degree 30 minutes divisible by 7 degree 30 minutes? Who is harder a marble or diamond? Why can't we walk in a straight line? What is a polygon with 4 sides and 4 right angles is a? What has 4 right angles opposite sides are equal? Two prisms are similar if the ratios of corresponding parts are equal? How many degrees are there in each exterior angle of an equilateral triangle A 30 degrees B 60 degrees C 90 degrees D 120 degrees? What describes bases of a cylinder? What is the size of a room that is 260 sq feet? How much of an acre is 14300 square feet? How many sides dise a hexegon have? What is the sum of the measures of the interior angles of this regular pentagon? How many lines of symmetry can be drawn in a scalene triangle? The length of a rectangle is three times its widthif the perimeter is equal to 144 feet what is the length of the rectangle? What does Revulusion mean? Are there any figures that have only three right angles? What is part of a line that includes two endpoints and all points between? What is the relationship between the diameter of a circle and its radius and vice versa?