Obtuse Triangles: The Uninvited Guests at the Party

Welcome to the Obtuse Triangle Society, where angles go to hide from the world!

Meet our members:

Regular Polygons: The Partygoers Rectangles: The Square Dancers Ellipses: The Circle Jerks
Learn more about our Obtuse Quadrilaterals

Disclaimer: We are not responsible for any angles that may be made obtuse during your visit.