Triangle Inequality - Day 1

Can a triangle with these side lengths exist?

15, 12, 9

• Yes

• No

• Cannot be determined

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

• Yes

• No

• Cannot be determined

Tags

CCSS.7.G.A.2

Will these three sides form a triangle?

• yes

• no

• Cannot be determined

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

• Yes

• No

• Cannot be determined

Tags

CCSS.7.G.A.2

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

• Yes

• No

• Cannot be determined

Tags

CCSS.7.G.A.2

Will these line segments form a triangle?

• yes

• no

• Cannot be determined

Can a triangle with these

side lengths exist?

(Don't fall for this one.)

0, 11, 12

• Yes

• No

• Cannot be determined

9. Which of these lengths CANNOT represent the sides of a triangle?

• 32, 34, 60
• 28, 30, 58
• 13, 20, 27
• 2, 4, 5

Tags

CCSS.7.G.A.2

Which of these side sets of side lengths could NOT form a triangle?

• 2 cm, 6 cm, 7 cm

• 5 cm, 2 cm, 5 cm

• 5 cm, 5 cm, 8 cm

• 3 cm, 10 cm, 15 cm

If the longest side of the triangle was 10. Then the two shorter sides must have a sum that is ....?

• any length
• equal to 10
• greater than 10
• less than 10

Tags

CCSS.7.G.A.2