问题描述:
Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P and PR is parallel to the x-axis.The x-and y-coordinates of P,Q,and R are to be integers that satisfy the inequalities -4≤x≤5,6≤y≤16.How many different triangles with these properties could be constructed?
(A)110 (B)1100 (C)9900 (D)10000 (E)12100
(A)110 (B)1100 (C)9900 (D)10000 (E)12100
问题解答:
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