How Do You Know If Three Side Lengths Make A Triangle

How many triangles can be created with the side lengths of 3 cm, 4cm, and 5 cm?

• Only 1 unique triangle

• multiple triangles

• no triangles

Which set of side lengths will make a triangle?

• 6, 8, 13

• 7, 9, 18

• 7, 7, 14

• 2, 6, 9

Which set of side lengths will NOT make a triangle?

• 3, 4, 5

• 1, 3, 4

•  3, 5, 7

• 2, 8, 9

Does a triangle with these side lengths exist?
20, 10, 9

• Yes

• No

Which set of numbers represents the side lengths of a triangle?

• {5,18,13}

• {6,17,22}

• {16,24,7}

• {26,8,15}

How many triangles exist with the given side lengths?  7 in, 7 in, 7 in

• No triangle exists

• Exactly one unique triangle exists

• More than one triangle exists

Does it make a triangle?

• Yes

• No

How many triangles exist with the given side lengths?  4 m, 4 m, 7 m

• No triangle exists

• Exactly one unique triangle exists

• More than one triangle exists

How many triangles exist with the given side lengths?  3 cm, 5 cm, 9 cm

• No triangle exists

• Exactly one unique triangle exists

• More than one triangle exists

How many triangles exist with the given side lengths?

15, 12, 9

• One unique triangle

• No triangles

• I don't know.

• More than one triangle