A triangle has two angle measures of 20 degrees and 30 degrees. Find the third angle. This triangle is a(n) triangle Question 2 options:

A. acute

B. obtuse

C. right

D. it does not make a triangle

Obtuse

Step-by-step explanation:

x = missing angle

20+30+x=180

50+x=180

x=130

90<130

Thus, the triangle is obtuse

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.