Question

Triangle XYZ is obtuse which list could represent the angle measures of triangle XYZ?

A. 20 60 100
B. 30 60 90
C. 50 50 80
D. 60 60 60

Answer 1

An obtuse triangle must have an angle greater than 90degrees (cannot equal 90). Therefore, A. would be the correct answer. This is because A. is the only set of angles that includes an angle greater than 90. Also, all angle measures add up to equal 180degrees.