A-A+

Points P R and T lie on a straight line. The

2022-08-05 18:59:59 问答库阅读 171 次

问题详情

Points P, R, and T lie on a straight line. The distance from P to R is 21, and the distance from P to T is 9.
Column A Column B
The distance from R to T 16
A．if the quantity in Column A is greater
B．if the quantity in Column B is greater
C．if the two quantity are equal
D．if the relationship cannot be determined from the information given请帮忙给出正确答案和分析，谢谢！

参考答案

正确答案：D
解析：点P、R和T位于同一条直线上，P到R的距离是21，P到T的距离是9。比较R到T的距离与16。解：本题的正确答案为(D)。因为题目中并未给出P，R和T的相对位置，所以T有两可能的位置：①T在P和R的中间，此时RT=12；②T和R在P的两侧，此时RT=30。