Which shape is formed by connecting three or more non-collinear points?

When three or more non-collinear points are connected, the shape formed is classified as a polygon. A polygon is a closed figure made up of straight line segments that meet only at their endpoints. The crucial aspect of polygons is that the points must not all lie on the same straight line (non-collinear), as that would prevent the formation of a closed figure.

In the case of three points that are non-collinear, the simplest polygon formed is a triangle. However, when the question refers to "three or more" points in a general sense, it can denote any polygon, such as quadrilaterals, pentagons, and so forth, which can be formed with additional points. Thus, the broader category of all shapes created by connecting three or more non-collinear points is indeed a polygon, making this the correct answer.

The term triangle specifically refers to a three-sided polygon, while other options like cuboids and circles do not fit the definition provided. A cuboid is a three-dimensional shape with rectangular faces, and a circle is a round shape defined by all points equidistant from a center point, neither of which meets the criteria outlined in the question.