100 points, please include a correct answer with a full explanation!!!!
Answer:
last one: sqrt(5)
Step-by-step explanation:
Length of AB
Sqrt[(4-0)²+(4-2)²]
sqrt(16+4)
sqrt(20)
2sqrt(5)
Length of A'B': ½ × length AB
½ × 2sqrt(5)
sqrt(5)