What set of transformations is performed on efhg to form e’f’h’g

A translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin

A translation 1 unit to the right followed by a 270-degree counterclockwise rotation about the origin

A 270-degree counterclockwise rotation about the origin followed by a translation 1 unit to the right

A 90-degree counterclockwise rotation about the origin followed by a translation 1 unit to the right

Step-by-step explanation:

picture below

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.