[計量] 請問兩題計量
1.P, Q, and R are distinct points on a straight line, with
Qbetween P and R. S is a point not on the line, and QR = QS
Column A ColumnB
PR PS (A)
這題原本要問的 可是一邊po文一邊又想了一次 好像想通了 請大家看看
------------------------
P Q R
S
QR = QS --> PR = PQ + QR = PQ + QS
考慮三角形PQS PQ+QS > PS (兩邊和大於第三邊)
請問這樣對嗎?
2.If (7,3) is the center of the circle, then the radius of the circle
could be equal to which of the following?
(A) 2 (B) 3 (C) 5 (D) 7 (E) 9
圖畫了x y 軸 (7,3) 和圓 原有突出到第四象限但是沒有到第二象限
Ans.(C)
為什麼(D) 7 不行?
謝謝
祝新年還在殺G的各位新年快樂!!
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