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Mathematics 7 Online
OpenStudy (anonymous):

Calculate the area of triangle ABC with altitude CD, given A (−3, −2), B (2, 3), C (-2, 5), and D (−1, 2). 14.1 square units 18 square units 19.5 square units 21 square units I've done everything I can and all I have gotten is either 15 or 16.76

jimthompson5910 (jim_thompson5910):

This is just a really bad problem. The segment (or even line) CD is NOT the altitude of triangle ABC and you can even see it in the attached image.

OpenStudy (anonymous):

That's what my triangle looked like, I got so confuesed.

jimthompson5910 (jim_thompson5910):

They messed up when making this problem.

OpenStudy (anonymous):

I just don't know what to go with...:(

jimthompson5910 (jim_thompson5910):

If they did it right, then segment CD and AB would be perpendicular (intersect at a 90 degree angle)

jimthompson5910 (jim_thompson5910):

you'll have to contact your teacher about it

OpenStudy (anonymous):

Okay

OpenStudy (anonymous):

Thank you

jimthompson5910 (jim_thompson5910):

you're welcome and I'm sorry I couldn't be of any help (typos are an inevitable part of life I guess)

OpenStudy (anonymous):

haha

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