Group the following figures into three classes on the basis of identical proportions
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 1, 3, 4; 2, 6; 5, 7
The seven figures are all hollow outlines, so they are grouped by the shape of the outline:
Triangles — figures 1, 3 and 4 (pointing up, down and to the right)
Four-sided figures — figures 2 (a rectangle) and 6 (a trapezium)
Half-rings — figures 5 and 7 (the same curved band, turned)
Only Option (2) keeps every group together.