Three angles are not acute
so it is false
5/1, 15/3, and 10/2 are all valid answers to that question.
3/4
when it’s parallel it has the same slope!
There are 7 cards. The number of possible correct picks is 2 (if you pick an 'S') plus 1 (if you pick the 'U') = 3 ways to succeed. So the probability of success is 3/7 ... about 43% .