Question

1. in rotational symmetry, an object is rotated about a fixed point called what? center of rotation axis of symmetry origin vertex

Explanation:

In rotational symmetry, the fixed point about which an object is rotated is defined as the center of rotation. The axis of symmetry is related to reflection symmetry (a line), the origin is a specific point in a coordinate - system (often \((0,0)\) in 2D), and a vertex is a corner point of a geometric figure.

Answer:

Center of rotation