| Actually the upper triangle (the whole triangle) is smaller than the lower triangle. Look at the RED triangle, the top corner of the upper triangle is started at the cross line +, however the same position of the lower triangle has a little higher position. If the grid line is a square, the upper RED triangle (its top corner) should not started from the cross line +. In a sense, both of the 2 triangles are NOT the same size. |
發表於 2010-2-7 10:18 PM
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