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| − | + | Case 1: AB and DE are parallel. | |
| + | That's easy. | ||
| + | |||
| + | Case 2: they are not parallel. Then they meet, let X be the meeting point. | ||
| + | You get lots of similar triangles involving X, and with some algebra this should not be hard. | ||
Revision as of 17:06, 22 September 2009
HW4-10MA460Fall2009
Case 1: AB and DE are parallel.
That's easy.
Case 2: they are not parallel. Then they meet, let X be the meeting point.
You get lots of similar triangles involving X, and with some algebra this should not be hard.
