What is an obtuse triangle? Definition and examples

An obtuse triangle is a triangle that has one obtuse angle (an angle bigger than 90 degrees)

Obtuse triangle

Things to notice about an obtuse triangle

  • An obtuse triangle has 1 obtuse angle and two acute angles
  • The longest side is the side opposite the obtuse angle 
  • There can only be one obtuse angle in an obtuse triangle
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.
Share this page: