The number of lines of symmetry of a scalene triangle is:

1. 0

2. 1

3. 2

4. 3

The letter F has

1. one horizontal line of symmetry

2. one vertical line of symmetry

3. two lines of symmetry

4. no line of symmetry

A rhombus is symmetrical about

1. each of its two diagonals

2. each of its two lines joining the mid-points of opposite sides

3. each of the perpendicular bisector of its sides

4. none of these.

The number of lines of symmetry of a circle is

1. 4

2. 8

3. 16

4. unlimited