Question

draw all possible lines of symmetry on this figure.

Explanation:

Step1: Recall the definition of line of symmetry

A line of symmetry divides a figure into two congruent parts such that one part is the mirror - image of the other.

Step2: Analyze the given figure

The given figure is a combination of a semicircle and a line segment (forming a sort of 'half - moon' with a flat base). For a figure with this shape, we can check for vertical symmetry.
If we draw a vertical line passing through the mid - point of the base of the figure, the left - hand side of the line will be the mirror - image of the right - hand side.

Answer:

Draw a vertical line passing through the mid - point of the base of the given figure. This is the only line of symmetry for the given figure.