二年级数学角的初步认识练习题附答案
二年级上册角的初步认识单元练习题一、填空1.一个角有( )个顶点,( )条边。 2.比直角大的角叫( )角,比直角小的角叫( )角。 3.拿一张长方形纸,先上下对折,再( )对折可以得到直角。 4.角的大小与( )无关,与( )有关。 5.在钟面上,3时整时针和分针组成( )角;7时整时针和分针组成( )角;8时半时针和分针组成( )角。二、选择1.一条红领巾有( )个角,其中有( )个锐角,有( )个钝角。A.1 B.2 C.3 2.三角尺上大...
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