Geometry quiz on symmetry online. This is a math quiz in which students will learn how to find out if objects have a line of symmetry or not. Symmetry means, an object have a line or plane along which its other half is a mirror image of the other. An example is man, a line of symmetry shows that on the outside both halves of our bodies look the same. In this quiz, there are pitfalls too, there are objects which are symmetrical but the lines drawn across them do not pass along an area of symmetry. Have fun reviewing skills in geometry studied in 1st, 2nd, 3rd, and 4th grades.