Triangle Inequality/Angle Sum

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

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

What is the range of values of x for a triangle's third side given side measures of 8 and 15?

• between 8 and 15
• between 7 and 23
• less than 7, greater than 23

Find the measure of the indicated angle.

Find the measure of the indicated angle.

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?

• 45°, 65°, 70°

• 150°, 110°, 100°

• 50°, 50°, 50°

• 90°, 90°, 90°

The sum of the lengths of any two sides of a triangle is _____ than the third side

• less

• greater

• equal

Does the sides 1, 1, 2 make a triangle?

• yes

• no

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

• 45°
• 90°
• 180°
• 360°

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o