Can you match the teacher's comments to the definitions? Definition of a circle
Teacher's comments
Ivy's definition: A 2D geometric shape that is both round
and closed, having no corners.
Correct! Your definition is very clear and
precise.
Ethan's definition: Given a distance r (call it the radius), a
circle is the set of all points r units away from some fixed
point C (call it the center) in a plane.
Sorry, this is incorrect. An ellipse, for
example, would also fit your definition.
Ebuka's definition: A 2-dimensional shape made by drawing
a curve that is always the same distance from a center.
Your definition is close, but it isn't precise
enough. A half-circle, for example, would
also fit your definition.