Answers:
Letter F: none
Number 3: line and plane simmetry
Letter E: line and plane simmetry
Explanation:
1) point symmetry means that a rotation of 180° returns the same original figure.
None of the objects given result the same when you rotate them 180°, so none has point symmetry.
2) line simmetry is when the reflection accross a line returns the same original figure.
Both number 3 and letter E have symmetry accros a horizontal line that crosses them by the middle, which F does not.
3) Plane simmetry: exactly as with the line,number 3 and letter E have simmetry accross a plane that crosses them by the middle.
