人教版二年级上册数学第3单元测试题
1第三单元试题一、填空:1、从一个点起,用尺子向不同的方向画()条线,就画出了一个()。2、方桌面上有()个顶点,()个角,都是()角。3、角的大小与边的长短(),与角()的大小有关。4、9时整时,针和分针成()角,4时30分,时针和分针所成的角比直角()。5、拿一张纸,先()对折,再左右对折可以得到一个直角。6、想知道一个角是不是直角,可以与三角板上的()比一比。一条红领巾有()个角。课桌面有()个角,都是()角。7、比直角小的是(),比直角大的是()。8、三角板上有()个角,()个直角,()个锐角。9、我们学过的角有()()()。二、选择题:1、一个角有()条边,()个顶点。A、1B、2C...
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