题目信息

In the grid of points above, each point has equal vertical & horizontal spacing from the others. A small 45-45-90 triangle is drawn. Counting this triangle, how many triangles congruent to this one, of any orientation, can be constructed from points in this grid?
A:112
B:120
C:240
D:448
E:480
参考答案及共享解析

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已选答案:
正确答案:
B:120
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题目来源
Magoosh