Tangent Theorems for Circles and the Pythagorean Theorem (Tanton Mathematics) @DrJamesTanton

Tangent Theorems for Circles and the Pythagorean Theorem (Tanton Mathematics) @DrJamesTanton

Uploaded October 2012 | Updated September 2026, 3 weeks ago

Here are two results from the geometry of circles that are easily proved as an application of Pythagoras's theorem. A little tidbit worth sharing here.

Tangent Theorems for Circles and the Pythagorean Theorem (Tanton Mathematics)

Divisibility By 11

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Divisibility by 11 (TANTON Mathematics)

Q5L1

Q1L3

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Q7Overview

Q4L5

DrJamesTanton |

Tangent Theorems for Circles and the Pythagorean Theorem (Tanton Mathematics)