Question

Which set of sides lengths will NOT form a

triangle?
A 3 ft., 4 ft.,5 ft.
B 10 ft., 12 ft., 20 ft.
C 1 ft.,2 ft 3 ft.
D 9 ft., 2 ft.,9 ft.

Answer 1

The answer is D

Explanation:

If you are working with right triangles, all of the other answers make a right triangle but if you're working with all triangles, all of the above can make a triangle.

Answer 2

Most likely the answer is D