Question

Which is true about rigid transformations and circles?

a.a reflection of a circle does not conserve the circle's radius.
b.a circle is only carried onto itself after each one degree rotation.
c.a translation of a circle does not conserve the circle's circumference.
d.a circle's shape is preserved regardless of any rigid transformation?

Answer 1

Answer: D. a circle shape is preserved regardless of any rigid transformation.

Explanation:

Answer 2

A rigid transformation is defined to be one in which the pre-image of the object and its new image after the transformation both have the exact same size and shape. So the answer in this question is:

D. a circle's shape is preserved regardless of any rigid transformation