When does a Pentagon have only 4 sides?

When it is intercepted by a plane.

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4 Jokes More 4 Jokes

What's the difference between a 3 figure and a 4-figure suit?

1 figure, literally and figuratively.

What did the mathematician do at the baseball game?

4 the home team

Plane Jokes More Plane Jokes

Why Couldn't the Ancient Egyptians Build a Plane?

Because, it wasn't very Pharoah-dynamic.

What's the difference between most people and planes?

Most people miss the twin towers.

Intercept Jokes More Intercept Jokes

When does a Pentagon have only 4 sides?

When it is intercepted by a plane.

When is a pentagon not a pentagon?

When it's intercepted by a separate plane.