👉 A regular three-dimensional object in which every cross-section is a circle; the figure described by the revolution of a circle about its diameter .
Alright class, settle down, let’s take a look! Today we’re tackling the word “sphere,” it's quite a treat. The dictionary gives us clues, oh so sweet! It says: "A regular three-dimensional object… every cross-section is a circle…" Let's break that down, nice and clear, Like thinking of a ball, held ever near. Imagine you slice it, layer by layer, Each cut you make, a circular prayer! No matter where you cut, it’s round you see, A perfect circle - eternally free! And then it says, “the figure described… by the revolution of a circle about its diameter.” Now that's a bit more complex, I agree, but let's simplify! Think of a wheel, spinning with glee, That circular shape, for all to see. If you roll it out, so smooth and grand, A sphere is formed – across the land! The diameter is the distance through, From one side to the other, it’s true. So a sphere is round, perfectly neat, With circles everywhere, oh so complete! Do you have any questions? Don't be shy, Let’s explore this shape and reach for the sky!