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四直线形(一)相交线与平行线弄懂下列几何名称的意义:(1)线段、射线、直线。(教材213—214页)(2)角、角的顶点、角的始边、角的终边。(教材217页)(3)同位角、内错角、同旁内角。(教材233—234页)(4)角平分线、两线互相垂直、斜线、点到直线的距离、线段的垂直平分线、对顶角、平行线。明确直角、锐角、钝角、平角、周角的意义及它们之间的相互关系。懂得什么是定义、命题、公理、定理、等量公理,不等量公理。(教材239—241页)
Four linear (a) intersecting lines and parallel lines to understand the following geometric meanings: (1) Line, ray, straight line. (Textbooks, pp. 213-214) (2) Corner, vertex of corner, end of corner, and end of corner. (217 teaching materials) (3) with the same angle, within the wrong angle, with the next corner. (Textbook 233-234) (4) angle bisector, two perpendicular to each other, slash, the distance from the point, the vertical bisector of the line segment, right angle, parallel lines. Clear right angle, acute angle, obtuse angle, angle, circumference of the meaning and the relationship between them. Understand what is the definition, proposition, axioms, theorems, equal axioms, not equal to the axioms. (Textbook 239-241)