“相似形”一書(中国数学会上海分会中学数学研究委員会編,新知識出版社出版),根据这本書的編輯目的,是为了帮助中学教师积極提高教学質量,並根据当前中学教学需要,…以提供中学数学教师作为进一步研究和了解教材的参考,从而更好地掌握教材.同时也可供 The book “Similar Shapes” (edited by the Mathematical Research Committee of the Shanghai Branch of the Chinese Mathematical Society, New Knowledge Press) is based on the editorial purpose of this book to help middle school teachers actively improve teaching quality and to meet current teaching needs in secondary schools. ,... To provide mathematics teachers in secondary schools as a reference for further study and understanding of teaching materials so as to better grasp the teaching materials.