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Home Q & A Board Science-Related Homework Help Mathematics Pre-calculus and Functions
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theepicseal theepicseal
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3 years ago
Hi Slight Smile! I have a problem:

For triangle ABC with A(4,12) B(-2,-2) and C(5,-5) verify that the triangle is a right angled triangle.

I found the distance of all 3 side lengths

AC=17.02
CB=7.61
BA=15.23

I put this into Pythagorean theorem and AC as my hypotenuse, and solved the Pythagorean equation. However, I got 289.68=289.86

Would my triangle still be a right angled triangle or does it come down to the decimal, not being equivalent therefore my triangle isn’t right angled? Or do only the whole numbers count?

Thanks a bunch Smiling Face with Open Mouth Grinning Face
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#1
Educator
3 years ago
Quote from: theepicseal (3 years ago)
Would my triangle still be a right angled triangle or does it come down to the decimal, not being equivalent therefore my triangle isn’t right angled? Or do only the whole numbers count?

I think that's close enough. Must have been rounding errors along the way that created the small difference.
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