Hello, landlord, first of all, analyze, this question is a scheme drawing question,

The design pattern is mainly based on ∠ A = 108, where ∠ B = 36 and 108=3×36, and then the pattern can be designed by using the properties of diamonds.

This question mainly investigates the properties of rhombus and isosceles triangle, and makes full use of the multiple of ∠ A = 108 to solve the problem.