你能找到少了的那块吗?
两个位于中心的圆哪个大?其实一样大!
你看到的是字母还是一堆黑色的图案?
Picture 1: The diagonal line in the 5 x 13 picture has been blurred (too thick) deliberately, which increases the area mistakenly. This is because the slopes of the triangle (3/8 for A and B) is not equal to the slope of the quadrangle (2/5 for C and D) Picture 2: the top triangle has a "sunken-in" tangent line, while the bottom one has a bulged tangent line. Same reason for the two triangles, the slope ratio is 2/5 to 3/8. 本贴由[salmonfish]最后编辑于:2008-4-26 17:9:3 |
要从黑的之间找白的, 就能看见了. |
是lift |
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