The pillbox

Three touching circles in a rectangle and a common tangent. What’s the angle?

Scroll down for a solution to this problem.


The angle is 30°.

Solution by Rony Sarker.

Visual solution

Proof without words by David Andriana.


The pillbox
Hiding it’s pills
Just to get
A pill for happiness
A pill against stress
A pill to feel better
A pill for good weather
A pill for your need
Green, blue, yellow or red
A pill for your mind
A pill to be kind
All in all to save your day
The pillbox to feel okay


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