Current location - Training Enrollment Network - Mathematics courses - The theme of the emblem of the Seventh International Conference on Mathematics Education evolved from a series of right triangles as shown in the figure. Let the first right angle be three.
The theme of the emblem of the Seventh International Conference on Mathematics Education evolved from a series of right triangles as shown in the figure. Let the first right angle be three.
OA 1 = A 1 A 2 = A 2 A 3 = A 3 A 4 =…= A 8 A 9 = 1，
The triangle shown in that figure are all right triangles,