Question

Planes X and Y are perpendicular. Points A, E, F, and G are points only in plane X. Points R and S are points in both planes X and Y. Lines EA and FG are parallel. Based on this information, which lines could be perpendicular to RS? Check all that apply. EA,ER,EF,FG,FS

Answer 1

we know that

Perpendicular lines are lines that intersect other lines and forms a right angle $(90\ degrees)$.

see the attached figure to better understand the problem

therefore

the answer is

Lines AE and FG are perpendicular to line RS. They form $90$° angles.

Answer 2

Given:

Planes X and Y are perpendicular to each other
Points A, E, F, and G are points only in plane X
Points R and S are points in both planes X and Y
Lines EA and FG are parallel

The lines which could be perpendicular to RS are EA and FG. <span />