近年来,围绕三角形的知识,在中考中出现了许多考查能力的探索新题型,归纳起来,主要有:一、探索规律型例1如图1,已知∠ABC=8°,θ=90°.(1)若α1=β1,则β1=;(2)若α1=β1,α2=β2,则β2=;(3)若α1=β1,α2=β2,α3=β3,……,αn=βn(n是大于或等于1的自然数),试猜想βn的度数与 In recent years, around the knowledge of the triangle, many new types of exploration questions have emerged in the middle school entrance examination. To sum up, there are mainly: First, to explore the pattern of the law case 1 as shown in Figure 1, it is known that ABC = 8 °, θ = 90 °. (1) If α1 = β1, then β1 =; (2) If α1 = β1, α2 = β2, then β2 =; (3) If α1 = β1, α2 = β2, α3 = β3, ..., αn =βn(n is a natural number greater than or equal to 1), try to guess the degree of βn and