5th - 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, 8, and 9?

• Yes
• No

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

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

Name the largest angle in this triangle.

• ∠D
• ∠E
• ∠F

Name the smallest angle in this triangle.

• ∠A
• ∠B
• ∠C

The longest side of a triangle would be located where on a triangle?

• Across from the smallest angle
• Across from the largest angle
• Cannot tell.
• Adjacent to the smallest side.

The smallest angle would be located where in a triangle?

• Across from the smallest side.
• Across from the largest side
• Cannot tell