engaging printable & digital math lessons for upper elementary teachers
This math vocabulary poster helps students identify and understand an obtuse angle using a clear visual model that shows its size compared to right and straight angles.
⭐ Definition: an angle greater than 90° and less than 180°
Example:
The angle shown measures 110°, so it is an obtuse angle because it is larger than a right angle but does not form a straight line.
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/
