Ask Uncle Colin is a chance to ask your burning, possibly embarrassing, maths questions — and to show off your skills at coming up with clever acronyms. Send your questions to firstname.lastname@example.org and Uncle Colin will do what he can.
Dear Uncle Colin,
I’m struggling to understand why, if you know a triangle has two sides the same, the base angles must be the same. Can you explain?
— I’m Struggling Over Some Coherent Explanation Leveraging Equal Sides
Hi, ISOSCELES, and thanks for your message!
There are several good proofs of this, but my favourite is known as the Bridge…
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