Let's do this question, which of these can be the set of measures of the sides of a triangle?
Again, it's a question that helps you solidify your fundamentals.
So give it a try.
We know that the sum of two sides of a triangle has to be greater than the third side.
Right.
What about option if you have seven, five and 20.
Right.
What about seven plus five?
That's equal to twelve, which is less than 20.
So it's not a valid triangle.
What about option B?
Nine plus 17 is equal to twenty six.
So that also is not valid.
Right.
Whatever option C, you have 12 plus 15.
That's less than twenty eight, which is mentioned as the third side.
But this is also not valid.
What about option B?
You can see that six plus seven is 13.
That's greater than 12 to X, plus 12 is 18.
That's greater than seven and seven plus 12 is 19 and that's greater than six.
Therefore, the correct answer is option D.