It's 3.74 rounded up to 4 the reason why it is that answer is because the formula to a triangle's Hypotenuse is A squared + B squared = C squared
Answer:
Pair 1.
Step-by-step explanation:
On pair 1, shape A can go into shape B with a rotation.
Pair 2 would be a translation.
Pair 3 would be a reflection across the x-axis.
Pair 4 would be a reflection across the y-axis.
1.9 is the answer. But I could be wrong though.