Answer:
D' (-2,5), E' (1,5); and F' (-1,2)
Step by step explanation:
When one does a reflection across the y-axis, the values of the y-coordinate for the order pairs remain the same value, while the values of the x-coordinates flip their signs.
Therefore:
point D (2,5) becomes D' (-2,5)
point E (-1,5) becomes E' (1,5)
and point F (1,2) becomes F' (-1,2)
