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1、第 4 课时角的分类和画角一、帮小动物找家,请你连一连。二、判断。(1)平角是一条直线。()(2)周角是一条射线,它只有1 条边。 ( )(3)大于 90的角就是钝角。 ( )(4)角的边越长,角的度数就越大。()(5)1 个周角 =2个平角 =4 个直角。 ( )(6)下午 3 时,时针与分针之间的夹角是90. ()三、用量角器分别画出一个45、120和 80的角。答案 : 一、略二、( 1) (2) (3 )(4)(5) (6)三、略尊敬的读者:本文由我和我的同事在百忙中收集整编出来,本文档在发布之前我们对内容进行仔细校对,但是难免会有不尽如人意之处,如有疏漏之处请指正,希望本文能为您解开
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