# Carnot Action! = GoGeometry Action 27!

The following applet dynamically illustrates

**Carnot's Theorem**for the case of an**OBTUSE TRIANGLE.****(The pink slider controls the measure of the obtuse angle with pink vertex.)**Without looking it up on another tab in your internet browser, how would you put Carnot's Theorem into words?**How can you formally prove what this applet informally illustrates?**(A huge thank you to Antonio Gutierrez, whose tweet inspired the creation of this applet.)## Quick (Silent) Demo

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