Axial symmetry means a figure can be split by a line, called the axis of symmetry, so that one half is a mirror image of the other. If you fold the figure along this line, the two halves match perfectly.
Example
Drawing the Mirror of a Figure
Method Drawing the mirror of a figure
Let’s draw a mirror image of a triangle on graph paper.
Draw the mirror vertices: For each vertex, count the squares to the mirror line (left or right). Place a new point on the other side of the line, the same number of squares away.
Draw the mirror figure: Connect the mirror vertices with lines in the same order as the original figure.