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学生所用的三角板是一个普通的学习工具,一副三角板有两块,一块是含30°、60°、90°的直角三角板,一块是含45°、45°、90°的直角三角板,但是就是这么普通的两块三角板在全国各地的中考中经常出现.笔者通过阅读发现,就题型来说,有选择题、填空题、解答题、探究题和开放题等等.就所解答的问题来说,有求角度的,有求线段长的,有求面积的等等.下面,就近几年全国各地的中考题,来加以说明.一、求角的度数1.只与一个三角板有关.
The square plate used by the students is a common learning tool. There are two sets of triangle plates, one is a right angle set plate with 30 °, 60 ° and 90 °, one is a right angle set plate with 45 °, 45 ° and 90 °, but it is So common two set square in the country in the middle of the exam often appear.The author found through reading, the questions, there are multiple-choice questions, fill in the blank questions, answer questions, inquiry questions and open questions, etc. The answer to the question Said that there are seeking angle, there is a line for the length of the line, with the area and so on .In the following, in recent years throughout the country in the examination questions, to illustrate.First, the angle of the degree 1. Only with a triangular board.