What height makes a mountain?

What has diagonals that are not congruent but are perpendicular to each other? Squares made of clay or stone for floors or walls? What geometric figure is suggested of a blackboard in your classroom? How do you Lay Ceramic Floor tile on a Diagonal Starting from a wall as appose to the center? What are lunge lines used for? How big 200mm square? Given a regular heptagon how many obtuse angled triangles are there? True or false The number lines that form a Cartesian coordinate system are called the axes and the point where they intersect is called the center? What is the difference between a line segment and a ray? Which statement best describes a difference between land and water surfaces? What is 2D imagery as compared with 3D imagery? How many ridges does a 10 coin have? Are any rectangles regular? How much should you charge to remove and lay 5 tiles? What is the sum of the interiorangles of a 48-gon? What are the polygons with 1-1000 sides? Can rectangle be a trapezoid? Can you become a villain in real life? How is segment AB congruent to segment BC in a rectangle? How many degrees are in a trapezoid?