Answer:
Permutation without repetition
Step-by-step explanation:
The order of the cards matter, which makes it a permutation, but since none of the cards are exactly the same, repetition isn't allowed/possible
False.
Multiplying two negatives gives a positive.
1.) <1=25°, <2=155°, <4=155°
If this is all the information you have, it is not enough to conclude the region is square. we need more information