对顶角及其性质.pptx

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1、沪科版七年级（下册）10.1相交线学习目标：1.通过两条相交直线的探究，掌握邻补角和对顶角的定义及性质。2.经历观察、测量、推理、交流等探究过程，理解对顶角的性质。3.能运用对顶角的性质进行运算并解决一些相关的实际问题。你能举出一些生活中有关相交直线的实例吗？议一议生活中的相交线新课导入生活中的相交直线在我们生活的世界中，蕴涵着大量的相交线，研究它们对今后的学习、工作和生活都很有用。本节要研究相交线成的角和它的性质，并用以解决一些简单的实际问题.有一个公共点的两条直线形成相交直线.观察图10-1剪刀剪开布片过程中有关角的位置和大小

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