Symmetry is dividing a shape or figure in a certain way so that both sides are the same. Usually the line of symmetry, the line separating the shape, is a straight line.
Chat with our AI personalities
a line of symmetry is the middle of a shape that is the same on both sides
It is a median.
To have no symmetry the four sides would all have different lengths, and each angle would also be different. The figure would not look like a square or a rectangle, but would instead be an irregular 4-sided polygon.
A squashed open box? Alternatively, a right-angle trapezium: ............................ .-------------....... .|..................\...... .|...................\..... .|....................\.... .|......................\.. .-----------------. ............................
Numbers that have rotational symmetry are those that look the same after being rotated by certain angles. In the case of single-digit numbers, the numbers 0, 1, and 8 have rotational symmetry. When rotated 180 degrees, 0 and 8 look the same, and when rotated 90 degrees, 1 looks the same. Numbers like 2, 5, and 6 do not have rotational symmetry as they look different when rotated.