Question

Shelf 1: 8 inches, 14 inches, 19 inches
Shelf 2: 10 inches, 16 inches, 25 inches
Shelf 3: 10 inches, 21 inches, 33 inches
Shelf 4: 7 inches, 20 inches, 30 inches

Which of the above shelf dimensions are not possible? (4 points)
Shelf 1 and Shelf 2
Shelf 1 and Shelf 4
Shelf 2 and Shelf 3
Shelf 3 and Shelf 4

Answer 1

These are triangular shelves I take it?

Answer 2

yes

Answer 3

Then no side can be longer than the other two added together. This is part of the definition of triangles.

Answer 4

Can you figure it out now?

Answer 5

yea let me see

Answer 6

shelf 3 and 4?

Answer 7

Right.

Answer 8

hah thanks!

Answer 9

Sure.