Question

Do the three sides make a triangle ?
10, 15, 20

Answer 1

I think you use the Pythagorean Theorem.
\[a^2+b^2=c^2\]

Answer 2

i think the formula is a^2+b^2=c^2 to find it

Answer 3

yes

Answer 4

The sum of two sides has to be greater than the third side.
sides 10, 15, and 20

10 + 15 > 20
10 + 20 >15
15 + 20 > 10

Yes, using the three sides you can make a triangle.