Yes, because 11 + 15 > 21, 11 + 21 > 15, and 15 + 21 > 11
Yes, it is possible.
yes
Yes
No. One of the sides is longer than the other two combined. If the side which is 29 is AB then the side connected to it at A will never be able to meet the side connected to it at B.
No
No
If you mean side lengths of 5, 4 and 1 then it is not possible to construct any triangle from the given dimensions.
Yes, it is possible.
a scalene triangle is a triangle with three differant sides
No
Yes, it's entirely possible, and quite easy as well.
yes
Yes
yes 3 --- 6| |9
Because the sum of the shortest sides is less than the longest side and in order to construct a triangle the sum of its shortest sides must be greater than its longest side.
No
In order to construct a triangle the sum of its 2 smallest sides must be greater than its longest side.