Triangle Inequality

Can the sides of a triangle have lengths 3, 8, and 9?

• Yes

• No

Can the sides of a triangle have lengths 3, 4, and 9?

• Yes

• No

Does a triangle with these side lengths exist?
15, 12, 9

• Yes

• No

• I don't know.

Can the sides of a triangle have lengths 4, 11, and 13?

• Yes

• No

What is a possible third side to a triangle with side lengths of 13 and 4?

• 9

• 12

• 8

• 5

What is a possible third side to a triangle with side lengths of 5 and 5?

• 9

• 10

• 11

• 12

Which of the following would NOT work to make a triangle with the two side lengths of 2 and 6?

• 6

• 7

• 5

• 4

Which of the following sets of side lengths could produce a triangle. SELECT ALL THAT APPLY.

• 4, 4, 4

• 5, 5, 10

• 3, 6, 9

• 5, 7, 11

• 13, 5, 6

Will these line segments form a triangle?

• yes

• no

Which set of side lengths will form a triangle?

• 3, 6, 12

• 7, 7, 14

• 9, 9, 9

• 13, 6, 7