A 3D scientific illustration showing a transparent ellipsoid with three labeled points A, B, and C on its surface. A curved triangle connects the points along the surface of the ellipsoid, labeled 'Curved triangle'. Beneath the ellipsoid, a flat beige triangle connects the same points A, B, and C in straight lines in 3D space, labeled 'Flat triangle'. The ellipsoid is lightly shaded blue, and the diagram has a white background with clear labels and a perspective that emphasizes the volume between the two triangles. See more