三角形涉及的知识点较多．是中考重点内容之一．本文总结2006年各地中考典型试题的解题策略．并向同学们介绍三角形知识的考点．一、一般三角形的性质例1 (吉林省课改区)把一副三角板(一个含45°角和一个含60°角的两个直角三角形)如图1放置,则两条斜边所形成的钝角α=＿＿度． The triangle involves more knowledge. Is one of the key content of the examination. This article summarizes the problem-solving strategies for the typical exam questions in various local examinations in 2006. The students were introduced to the test point of the triangle knowledge. First, the nature of the general triangle Example 1 (Jilin Province, the curriculum reform zone) to a triangle (a 45 ° angle and a 60 ° angle with two right triangles) as shown in Figure 1, then the two oblique sides formed Obtuse angle α = __ degree.