Which of these lengths could be sides of a triangle?
A. 8cm, 12cm, 19cm
B.11cm, 8cm, 19cm
C.10cm, 12cm, 24cm
D.12cm 11cm 24cm

Question

Which of these lengths could be sides of a triangle?
A. 8cm, 12cm, 19cm
B.11cm, 8cm, 19cm
C.10cm, 12cm, 24cm
D.12cm 11cm 24cm

anonymous · Answer

In a triangle, no one side can be greater than or equal to the sum of the other sides.

anonymous · Answer

it is b

aperez · Answer

How so?

anonymous · Answer

Hint: it is NOT b

anonymous · Answer

Why do you use Alicia Keys as a display pic?

aperez · Answer

Okay thanks Tcarroll..Ad I use Alicia Keys as a Display Wallpaper because she is one of my fav. Singers.

anonymous · Answer

So, for each of the letters a, b, c, and d, take each pair of sides and add them.  There should be 3 pairs of sides for each selection.  If the sum of each pair is greater than the side left over, you can get a triangle.  And it's a good picture.

aperez · Answer

but don't they suppose to sum up to 180?

anonymous · Answer

That's for angles.

aperez · Answer

Ohh okay Hang on.

anonymous · Answer

A triangle will have 3 angles and 3 sides.  We are only concerned about the sides for this question.

aperez · Answer

Okay umm well I got D for it It is greater.?

anonymous · Answer

In D, 24 > 12 + 11, so D is not the answer.

anonymous · Answer

|dw:1352834835051:dw|That's visually why you can't get a triangle with selection D.

aperez · Answer

Okay I kind of see what your saying. Hmm I think I'll go with A .

anonymous · Answer

You got it!  Good job!

aperez · Answer

Because it is's Less right? Umm well Thank you for Taking your time to help me :D

anonymous · Answer

8 + 12 > 19     and    8 + 19 > 12    and    12 + 19 > 8  So, that's why your choice A is right.

anonymous · Answer

Yes, you are understanding this well now.

aperez · Answer

Thank you Again. and Kind of.

anonymous · Answer

lol  It just takes time,  Mull it over and you'll get it even better!   :-)