VSEPR theory and molecular shapes

[elemis]

When there are 5 or more electrons pairs neglect repulsion between electron pairs at an angle greater than 90⁰

This is an excerpt from http://www.s-cool.co.uk/alevel/chemistry/atomic-structure/shapes-of-molecules.html" SCROLL DOWN.

My question is quite simple : what does this mean ? What are they trying to say ?

 

[Borek]

Perhaps that system is dominated by repulsions of pairs with angles lower than 90°?