Angles of a Triangle

Students learn to classify triangles as acute (all angles acute), right (one angle right), or obtuse (one angle obtuse). Students also learn that the sum of the measures of the angles of a triangle is 180 degrees, and students are asked to use this formula to find the measures of missing angles in given triangles.

FREE PRACTICE

COMPLETE LESSON

Angles of a Triangle is one of thousands of math lessons at MathHelp.com.

JOIN NOW TO ACCESS OUR COMPLETE LESSONS

Video Examples
Guided Practice with Audio
Self Tests & Grade Reports
Worksheets, Notes, & More