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A triangle has side lengths of 12 cm, 15 cm, and 20 cm. Classify it as acute, obtuse, or right. (1 point)
acute
obtuse
right
There is not enough information.
 one year ago
 one year ago
A triangle has side lengths of 12 cm, 15 cm, and 20 cm. Classify it as acute, obtuse, or right. (1 point) acute obtuse right There is not enough information.
 one year ago
 one year ago

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zhane2015Best ResponseYou've already chosen the best response.0
I wanna choose Right...
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
By the converse of the Pythagorean Theorem, if 20^2 = 15^2 + 12^2, then "right" is correct. Check the arithmetic and let us know. @zhane2015
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
Good. What is 15 times 15?
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
You can enter "15 times 15" in the Google search box and get the product. @zhane2015
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
> I wanna choose Right... @zhane2015 Suggest you not choose until the arithmetic is done.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
Okay. I'll do 12 times 12 to get 144.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
12 cm, 15 cm, and 20 cm.  Question: Is 12^2 + 15^2 = 20^2 That is, is 144 + 225 = 400? Yes or No?
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
Okay. Therefore, the triangle is NOT Right. That leaves Obtuse and Acute. Check out this attachment below: (comes from http://jwilson.coe.uga.edu/emt668/emat6680.folders/brooks/6690stuff/righttriangle/pythagconv.html )
 one year ago

zhane2015Best ResponseYou've already chosen the best response.0
OMG you're the Best!
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
Let's test for acute. Is 400 < 225 + 144 [ Is 20^2 < 12^2 +15^2 ] Yes or No? @zhane2015
 one year ago

zhane2015Best ResponseYou've already chosen the best response.0
Thank You so much I really appreciate it
 one year ago

DirectrixBest ResponseYou've already chosen the best response.3
Glad to help. Learn that theorem on the chart and you'll get all this type problem correct.
 one year ago
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