engaging printable & digital math lessons for upper elementary teachers
This math vocabulary poster helps students identify and understand an obtuse triangle using a clear visual model that highlights the triangle’s angle greater than a right angle.
⭐ Definition: a triangle that has one angle greater than 90°
Example:
The triangle shown is an obtuse triangle because one of its angles opens wider than a right angle.
What’s Included
• Full-page poster
• Half-page version
• Display on your math word wall
• Use during guided math and whole-group discussions
• Model how to use the word in math talk
• Print multiple per page for math vocabulary notebooks
• Add mini versions to math toolkits or vocabulary rings
Looking for more math vocabulary support?
Explore our elementary math vocabulary library: https://mathtechconnections.com/math-vocabulary/
