triangle inequality

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 3, 4, and 9?

• Yes
• No

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

• Yes
• No

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 set of numbers may represent the lengths of the sides of a triangle?

• {2,5,9}
• {6,6,7}
• {6,4,2}           
• {7,8,1}

In a triangle, how many total degrees are there?

• 100%

• 180 degrees

• it varies

• 360 degrees

Does the sides 8, 9, 10 make a triangle?

• yes

• no

The lengths of two sides are given (8, 5). What are the possible length of the third side? Between what two numbers

• Between 5 and 8

• Between 3 and 13

• Between 3 and 5

• Between 5 and 13

The lengths of two sides are given (9, 2). What are the possible length of the third side? Between what two numbers

• Between 0 and 2

• Between 2 and 9

• Between 7 and 11

The lengths of two sides are given (10, 10). What are the possible length of the third side? Between what two numbers

• Between 0 and 10

• Between 0 and 20

• Between 10 and 11

• 10