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How to find area of triangle using vertices, and angles?

Let be the triangle with vertices at P=(3,−2,1), Q=(−5,2,−5) and R=(3,−3,2).

The area of is:

The angle ∠QPR is _____ degrees
The angle ∠PQR is _____ degrees
The angle ∠PRQ is _____ degrees

14 degrees

23 degrees

97 degrees

This entry was posted on Thursday, February 18th, 2010 at 5:24 pm and is filed under triangle area. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “How to find area of triangle using vertices, and angles?”

  1. 14 degrees

    23 degrees

    97 degrees
    References :

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