11月TM的学习
几何 变换 点对直线的反演 平面对圆的反演。 11.6尺规作图点在圆内的反演点在圆上的反演点在圆外的反演。直线在圆外的反演。 11.08以O为圆心,r为半径,的圆K。圆外一点P,直线OP上一点P'。当OP·OP'=r²,那么点P'是点P,关于圆k的反演点。点p是原象。 机械制图基础,组合体画法。 11.10Oral English practice. 还是几何作图,这次只用圆规,画圆C内的点P,的反演点。和圆C外的点P,的反演点。 11.11 用到反演点的圆规作图,只用圆规求出给定点A,B 之间 的中点。 设有某个其圆心未知,给定了圆周的圆,求该圆的圆心。 11.12 Oral English practice. Hey there. I'm trying to go to the met. Which platform do i take? You want to take Updown platform. Thank you. 11.17I'm study English. The plants living in the ground. root take in water and food. stem hold up the plant. leaf. flower make up fruit. seed. 11.17 机械制图,习题,组合体的三视图。 11.19What plants need to grow? air,warmth,space, siol, water and sunlight. Type ofanimals. reptile, bird, insect,mammal, fish. 11.20机械制图基础,练习组合图。English.Body parts of animals.
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