The musical term alto, meaning high in Italian (Latin: altus), refers to the second highest part of a contrapuntal musical texture and is also applied to its associated vocal range, especially in choral music. It is also the root word of contralto, the lowest standard female voice type.
circle noun [ C ] (SHAPE) âº geometry a continuous curved line which is always the same distance away from a fixed central point, or the area enclosed by such a line: Colored paper was cut into circles, squares, and triangles. A circle of chairs had been arranged in the center of the room.
A sphere is a three dimensional version of a circle, like a basketball or a marble. The definition of a sphere is every point that is the same distance from a single point called the center. Terms of a Sphere In order to calculate the surface area and volume of a sphere we first need to understand a few terms: