2 answers:
Answer
2. Square root of 20
Step by step explanation
Use the distance formula to find the length of AB.
The distance formula = 
Here A = (4, 5) and B = (2, 1)
x1 =4, y1 = 5, x2 = 2 and y2 = 1
Plug in these values in to the distance formula, we get
AB = 
AB = 
AB = 
AB = √20
The answer is Square root of 20
.
Thank you.
The distance between two points
and
can be calculated by the formula
The vertices A and B of the triangle ABC have coordinates (4,5) and (2,1), respectively.
Therefore,

Answer: correct choice is 2
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