Question

Determine how many lines of symmetry each object has. Then determine whether each object has rotational symmetry.

A. 5; yes
B. 5; no
C. 4; yes
D. 4; no

Answer 1

An object with five-part radial symmetry has 5 lines of symmetry and also exhibits rotational symmetry, corresponding with Option A (5; yes).

Step-by-step explanation:

The lines of symmetry and whether an object has rotational symmetry can tell us much about its shape. For a figure with five-part radial symmetry, like echinoderms, there are five lines of symmetry passing through the central point and yes, they do have rotational symmetry, meaning the figure appears the same after a certain degree of rotation. Therefore, the correct answer regarding the number of lines of symmetry and rotational symmetry for an object with five-part radial symmetry is Option A (5; yes).