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Text File | 1991-03-06 | 928 b | 35 lines | [TEXT/GEOL] |
- Item 1390730 18-Dec-90 13:40PST
-
- From: KNEPPER Knepper, Christopher
-
- To: X0591 MacApp Dev Assoc, Howard Katz,IVC
-
- cc: MACAPP.TECH$ MacApp Technical
-
- ------------------------------------------------------------------------------
-
- Sub: Re: puzzle diversion for you
-
- Howard,
-
- Interested readers will immediately recognize that the solution takes advantage
- of the law of proportional triangles. The law, simply stated, is that for 2
- triangles in which all angles are equal, the corresponding sides are
- proportional.
-
- This means that, for a bridge located x units along the river from city 1, we
- have the following proportions:
-
- triangle 1: 15/x
- triangle 2: 3/(24-x)
-
- solving for x gives x=20.
-
- This means that the bridge should be located 20 units along the river from city
- 1.
-
- Happy holidays!
-
- -Chris
-
-