Triangle Inequality Theorem and Triangle Sum

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

• 45°
• 90°
• 180°
• 360°

Tags

CCSS.8.G.A.5

The Triangle Sum Theorem deals with _______ of a triangle

• angles
• sides

Tags

CCSS.8.G.A.5

The Triangle Inequality Theorem states the sum of the lengths of any two sides of a triangle is ________________ the length of the third side.

• greater than
• less than 
• equal to

Find the measure of each angle indicated. 

• 33°
• 136°
• 36°
• 31°

Tags

CCSS.8.G.A.5

Find the measure of each angle indicated. 

• 140°
• 21°
• 105°
• 25°

Tags

CCSS.8.G.A.5

Find the measure of the missing angle.

• 139°

• 66°

• 138°

• 116°

Tags

CCSS.8.G.A.5

Find the measure of each angle indicated. 

• 50°
• 35°
• 100°
• 55°

Tags

CCSS.8.G.A.5

Find the measure of each angle indicated. 

• 40°
• 33°
• 30°
• 29°

Tags

CCSS.7.G.B.5

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

• Yes
• No
• I don't know.

Tags

CCSS.7.G.A.2

Does a triangle with these side lengths exist?
33, 16, 17

• Yes
• No
• I don't know.

Tags

CCSS.7.G.A.2