Geometry Triangle Inequality Theorem

Does a triangle with these side lengths exist?
15, 12, 9

• Yes

• No

• I don't know.

Name the largest angle in this triangle.

• ∠D

• ∠E

• ∠F

Identify the shortest side measure.

• QP

• QM

• MP

Identify the longest side measure.

• AC

• BA

• BC

Solve for x.

• 5

• 12

• -7

• -6

Name the smallest angle in this triangle.

• ∠A

• ∠B

• ∠C

List the side measures in order, shortest to longest.

• QM, QP, MP

• MQ, MP, QP

• MP, MQ, QP

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°

• 90°

• 180°

• 360°