Lengths Form a Triangle

Determine if it is possible to form a triangle with the given side lengths. 7 yd, 8 yd, 9 yd

• yes

• no

Does a triangle with these side lengths exist?

• Yes

• No

• I don't know.

• Cannot be determined

• 5 ft., 8 ft., 15 ft.
• 2 ft., 5 ft., 8 ft.
• 5 ft., 8 ft., 12 ft.

Does a triangle with these side lengths exist?

3,4,5

• 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

Find sides AB

Find the missing length.

• 9

• 18

• 4.5

• 16

Does it make a triangle?

• Yes

• No

What is the length of AB?

• AB = 11

• AB = 6

• AB = 5

• AB = 12

Find DC