2
Answer: CSet 2: Triangles (Beginner)
Explanation
PROBLEM
A triangle has angles of 77 degrees and 46 degrees. What is the third angle?
A triangle has angles of 77 degrees and 46 degrees. What is the third angle?
A.
58
B.
54
C.✓ Correct
57
D.
60
Detailed Explanation
Choice C is the best answer. Third angle = 180 - 77 - 46 = 57 degrees
Why others are wrong:
A: 58 is incorrect because it does not satisfy the equation.
B: 54 is incorrect because it does not satisfy the equation.
D: 60 is incorrect because it does not satisfy the equation.