Definition: A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from a given point (center).

Alright class, settle down and let’s take a look! Today we're tackling ‘circles,’ a shape quite grand. The dictionary tells us, understand? It says a circle is “two-dimensional,” you see, Like a flat little picture, for you and for me! “A line consisting of points,” that’s part of the key, All equally distant – as far as they can be! Think about a spinning top, round and bright, Or a sun in the heavens, a beautiful sight. There's a special point, we call it the "center," you know, From that point outwards, the distances flow. Every single spot on the circle’s edge too, Is just as far from the center – it’s perfectly true! So remember this rhyme, let it stick in your brain: A circle's a shape with a constant refrain - Equal distance from a central place, you see, That’s what makes a circle uniquely free! Now, does anyone have any questions for me?