If points X and Y are two distinct points in the coordinate plane, which of the

游客2024-01-12  15

问题 If points X and Y are two distinct points in the coordinate plane, which of the following can have more than one possible value?

选项 A、The circumference of a circle with diameter XY.
B、The area of a square with diagonal XY.
C、The perimeter of a right isosceles triangle with a leg XY.
D、The area of a circle with chord XY.
E、The area of an equilateral triangle with base XY.

答案 D

解析 此题考查的是平面几何的综合知识。有些人误选了C,是因为不了解leg是什么意思,认为XY既可以是斜边,也可以是直角边,其实在直角三角形中,斜边是hypotenuse,直角边称为腰(leg)。
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