Triangle Inequality

Can these sides form a triangle? 2, 9, 5

• Yes

• No

Can these sides form a triangle? 6, 4, 4

• Yes

• No

Can these sides form a triangle? 22, 22, 22

• Yes

• No

• Yes

• No

What is the range of the 3rd side if 2 sides of a triangle are 5m and 11m?

• x > 6, and x < 12

• x > 12, x < 16

• x > 6, x < 16

• x > 2, x < 12

What is the range of possible third side measures using 10 and 15?

• 9 < x < 16

• 10 < x < 15

• 1 < x < 5

• 5 < x < 25

Measurements of 4 cm, 7 cm, and ​ (a)   form a triangle

• 6 cm
• 11 cm
• 3 cm
• 2 cm
• 12 cm

What is the largest angle in this triangle?

• C
• A
• BA
• AC

List the angles in order from least to greatest.

• C, A, B
• B, A, C
• A, C, B
• B, C, A

List the side measures in order, shortest to longest.

• QM, QP, MP
• MQ, MP, QP
• MP, MQ, QP