In the diagram, points $A, B, C$, and $D$ are on a circle. Philippe uses a ruler to connect each pair of these points with a line segment. How many line segments does he draw?

![](https://cdn.mathpix.com/cropped/2024_04_17_c7ef3b511bfae79753a1g-1.jpg?height=385&width=374&top_left_y=1049&top_left_x=1407)
Philippe connects $A B, A C, A D, B C, B D$, and $C D$.

He draws 6 line segments.

ANSWER: 6