2. Axisymmetric figure, in mathematical terms, is defined as a figure folded along a straight line in a plane, and the parts on both sides of the straight line can completely overlap.
3. Among the ten numbers 0-9, the numbers 1, 2, 4, 5, 6, 7, 9 can't completely overlap no matter how they are folded in half, so 1, 2, 4, 5, 6, 7, 9 is not an axisymmetric figure.
4. Among the ten numbers 0-9, the two parts of the numbers 0, 3 and 8 can completely overlap, so the numbers 0, 3 and 8 are axisymmetric figures.
Extended data:
If a plane figure is folded along a straight line, and the parts on both sides of the straight line can overlap each other, then the figure is called axis symmetry, and this straight line is called axis symmetry.
Axisymmetric graphic properties:
1. The symmetry axis is a straight line.
2. In an axisymmetric figure, the distance between the corresponding points on both sides of the axis of symmetry is equal.
3. Axisymmetric graphics, folded in half along the axis of symmetry, and completely overlapped left and right.
4. If two figures are symmetrical about a straight line, then this straight line is the line segment whose symmetry axis bisects the symmetry point vertically.
5. Graphic symmetry?
References:
Baidu Encyclopedia, Axisymmetric Graphics