**1. What is the difference between an axis of symmetry and a mirror line?**

Not much! A mirror line is part of a reflection. An axis of symmetry is usually drawn on a shape.

**2. Can a shape have an order of rotational symmetry of 0?**

No. All shapes have an order of symmetry of at least 1 (This is a turn of 360

^{o})

**3. What is point symmetry?**

Point symmetry is when a shape maps onto itself under a rotation of 180

^{o}(a half turn)