4
Answer: DSet 5: Triangles (Beginner)
Explanation
PROBLEM
A triangle has angles of 50 degrees and 70 degrees. What is the third angle?
A triangle has angles of 50 degrees and 70 degrees. What is the third angle?
A.
58
B.
59
C.
62
D.✓ Correct
60
Detailed Explanation
Choice D is the best answer. Third angle = 180 - 50 - 70 = 60 degrees
Why others are wrong:
A: 58 is incorrect because it does not satisfy the equation.
B: 59 is incorrect because it does not satisfy the equation.
C: 62 is incorrect because it does not satisfy the equation.