Atripod can be used to level a camera. what geometric figure is modeled by the intersection of a tripod to the ground? explain.

Consider the figure shown below.
The three legs of the tripod meet the ground at points A, B, and C.

The ground is a horizontal plane, so the points A, B, C when joined together define a triangle.
By design, the weight of the tripod passes through the point O, the center of the triangle, so that triangle ABC is a regular or equilateral triangle.

An equilateral triangle.