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Topic: common core geometry question
Replies: 4   Last Post: Apr 6, 2012 4:42 AM

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Lance Sayward

Posts: 6
From: Champlain Valley Educational Services
Registered: 5/5/05
Re: Use similar right triangles
Posted: Apr 6, 2012 4:42 AM
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If the coordinates of the points and the ratio are given, it could be solved with similar right triangles.

Consider the points (0,15) and (20,0) and a ratio of 2:3.

The legs can be determined from the coordinates. The sum of the ratio can be used for the hypotenuse; there is no need to calculate the distance.

The proportions would be 2/x=5/20 and 3/y=5/15, (8,9).

I would also accept 3/x=5/20 and 2/y=5/15 for (12,6) for the right-to-left thinkers.

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