Question

Help!! will give medal pic will be below
Given:a is perpendicular to c
b is perpendicular to c
a is perpendicular to d
Prove: b is perpendicular to d

Answer 1

Well, the angle formed when b and d intersect must be 90 degrees.

Answer 2

ok

Answer 3

Maybe someone else can give you a better answer though. :p

Answer 4

Just remember that the interior angles of a square add up to 360 degrees. We already have 3 90 degree angles given. This means that the unknown angle is 90 degrees. Two lines that intersect at a 90 degree angle are perpendicular.

Answer 5

ok