Pressure - correct statements?

[maali5]

Homework Statement

In my notes it states that at a point in fluid, pressure act equally in all directions. While at a wall fluid act perpendicular at a wall.

Why ?

Homework Equations

Pressure = force/area

The Attempt at a Solution

Can you please explain to me the reasons behind this

 

[mfb]

At a wall, pressure still acts in all directions - but if you want to consider pressure on the wall, only the direction perpendicular to the wall is relevant. If you want to consider forces in the wall, things are different, as the wall is solid.