Answer: D
Step-by-step explanation:
This is actually a really easy question. I have three ways to solve this:
1) 180- (54+64)=62, 180-62=118, like the solution
2. Since 54+64+c=180 and 180-c= d, d=54+64, which equals 118.
3. Deduction! d is not a straight line, cannot be more than 180 degrees, and can't be smaller than 90 degrees, so halfway through solving by 1), you've already got the answer!
