Two squares are equal to three triangles, and two circles are equal to three squares. How many triangles are two circles and one square equal to?
Analysis: starting from 2 circles = 3 squares, then the problem is 2 circles + 1 square = 4 squares
Because 2 squares = 3 triangles, the problem is finally transformed into 4 squares = several triangles
The obvious answer is six triangles