Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles.

Question

​​20.2 in., 11 in., 8.2 in.

A.
unique triangle

B.
many different triangles

C.
no triangles
Hey ya'll! I'm posting another question like the one I just posted. Do you think you guys can help me out with this or tell me how I can do it? I'm not that good at geometry. Thank you so much if you do!

Answer 1

The sum of any two sides must be greater than the third side to physically form
the triangle, so is ...
20.2 + 11 > 8.2 ?
is 20.2 + 8.2 > 11 ?
is 11 + 8.2 > 20.2 ?

if the answer to any of those is NO, then you can't have a triangle

Answer 2

okay, so judging by the explanation, I need to find the sum of the math you gave me, and if the first two are greater then the third expression, then it can form a triangle? am I understanding right?

Answer 3

I looked the expressions up and this is the results
1. true
2. true
3. false
does this mean I can form a triangle?

Answer 4

did you not read my last line ?

"if the answer to any of those is NO, then you can't have a triangle"

Answer 5

ohhh, sorry, i misunderstood!