Answer:
yes
Step-by-step explanation:
for it to be a right triangle you should be able to add two of the sides and it be greater than the third side. 7 + 24 > 25
24 + 25 > 7
7 + 25 > 24 therefore it is indeed a right triangle
This equation has infinite solutions, any real number makes it true.
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Answer: 19 units
Count from A down then the left until you reach B.