诡异！！！相交包括了相切？？？不会哦。。

欧阳小西 · 发表于 2011-7-15 16:37:01

印象中。。。相交是大于等于2个焦点切是一个交点
Which of the following lists the number of points at which a circle can intersect a triangle?

1) 2 and 6 only
2) 2,4 and 6 only
3) 1,2,3 and 6 only
4) 1,2,3,4 and 6 only
5) 1,2,3,4,5 and 6

chron

Correct me if i'm wrong, but i always had the impressions that to 'intersect' means to 'cut through' and not just 'touch' tangentially.
Sorry if this is a stupid question, but i'm not english native and I thought that intersecting does not include touching.

Obviously it does include it though?

米果仁说

intersection means any common points.

when a line is tangent to circle, both the circle and the line has a common point, which is the intersection point.

MarsTOF · 发表于 2011-7-15 16:48:34

这题是选E么？相交确实包括相切啊相切只是比较特殊罢了。。

诡异！！！相交包括了相切？？？不会哦。。

所属分类: GMAT考试

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