AMC8 1998
AMC8 1998 · Q6
AMC8 1998 · Q6. It mainly tests Area & perimeter.
Dots are spaced one unit apart, horizontally and vertically. The number of square units enclosed by the polygon is
点在水平和垂直方向上相距一单位。多项式围成的平方单位数是
(A)
5
5
(B)
6
6
(C)
7
7
(D)
8
8
(E)
9
9
Answer
Correct choice: (B)
正确答案：（B）
Solution
Slide triangle $A$ down to fill in triangle $B$. The resulting $2 \times 3$ rectangle has area 6.
将三角形 $A$ 向下滑动填充三角形 $B$。得到的 $2 \times 3$ 矩形面积为 6。
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