Question

AB is perpendicular to line segment [CF, FH, DH, GH] . If the length of EF is a units, then the length of GH is [a, b, a+b, a-b] units.

I need help with this one. If anyone can answer this, thank you in advance. The choices I have are in the "[ ]".

Answer 1

AB is perpendicular to [GH] and GH is [A]

Answer 2

we know that

in this problem

AB is perpendicular to line segment  EF and GH

AB is parallel to line segment CD

EF is parallel to line segment GH

$EF=GH=a\ units\\\\EG=FH=b\ units$

therefore

the answer Part a) is

AB is perpendicular to line segment GH

the answer Part b) is

the length of GH is $a\ units$