Question

how would D'E'F' look like on a grid 90° counterclockwise.

Answer 1

Step 1: Let's reflect the triangle DEF across the y-axis.

• D' = (5, -2)

,

• E' = (0 , -2)

,

• F' = (4, -6)

Step 2: Let's rotate the triangle 90 degrees counterclockwise:

• D' = (0, 7)

,

• E' = (0 , 2)

,

• F' = (4, 4)