@Hero The sides of a triangle have lengths of 8 cm, 15 cm, and 17 cm. Which of the following statements is true? A. The triangle is a right triangle, because 8 + 15 17.

Question

@Hero 

The sides of a triangle have lengths of 8 cm, 15 cm, and 17 cm. Which of the following statements is true?
A. The triangle is a right triangle, because 8 + 15 > 17. <----
B. The triangle is a right triangle, because 8^2 + 15^2 = 17^2.
C. The triangle is a right triangle, because (8 + 15)^2 = 17^2.
D. The triangle is not a right triangle.

A is the only one that makes sense to me. :)

hero · Answer

Why does that one make sense to you? What reasoning did you use to arrive at your answer choice?

solomonzelman · Answer

$$8^2+15^2=17^2$$

anonymous · Answer

Hold on, there's a snake outside my door!

solomonzelman · Answer

You live in India ?

hero · Answer

In general, 

If a^2 + b^2 = c^2, then you have a right triangle
if a^2 + b^2 > c^2 then you have an acute triangle
if a^2 + b^2 < c^2 then you have an obtuse triangle

anonymous · Answer

No, the us. My grandmother is freaking out because it's on our screen dorr and we looked out the window and bam! its there sao im trying to find out what kind it is and whethr or not its pisness.

hero · Answer

*poisonous

solomonzelman · Answer

probably not :)

hero · Answer

I would never assume a snake or spider isn't poisonous. I don't trust either one of 'em.

solomonzelman · Answer

true

anonymous · Answer

I'm almost positive it's this one... http://en.wikipedia.org/wiki/Seminatrix :) Now on with my explanations...

anonymous · Answer

The sides of a triangle have lengths of 8 cm, 15 cm, and 17 cm. Which of the following statements is true?
A. The triangle is a right triangle, because 8 + 15 > 17. 
B. The triangle is a right triangle, because 8^2 + 15^2 = 17^2.
C. The triangle is a right triangle, because (8 + 15)^2 = 17^2.
D. The triangle is not a right triangle.

A ~  8+15=23>17 So TRUE! :)
B ~   (8^2=64) + (15^2=225) = 289        17^2= 289 Hm..... That one is true....
C ~ (15+8=23)^2=529      17^2-289  SO...FALSE! :) 

@Hero

anonymous · Answer

@Hero

hero · Answer

I already gave you parameters above:

If a^2 + b^2 = c^2, then you have a right triangle
if a^2 + b^2 > c^2 then you have an acute triangle
if a^2 + b^2 < c^2 then you have an obtuse triangle

But there's another parameter to consider for option D

a + b > c
b + c > a
a + c > b

hero · Answer

The first set of parameters are for determining what kind of triangle you have.
The second set determines if you have a triangle or not.

hero · Answer

For

a + b > c
b + c > a
a + c > b

All three must be true in order for the triangle to exist.

anonymous · Answer

I believe it's B, after looking over what you wrote. :) @Hero