The free printables in this post deal with finding the unknown angles of triangles. Your concepts of interior and exterior angles of triangles should be sound if you want to solve the problems without hiccups.
Find the Interior Angles | Solve for 'x'

Triangle Exterior Angle Theorem Worksheet
Triangle - Exterior Angles Worksheet
This is a great way to review the Triangle Sum Theorem. Students look at different triangles and calculate the missing angle in each. They do not need protractors and should use subtraction and addition. This is a great way to review and works wonderfully as a filler activity. There are three sets of worksheets and answer keys are included.


Triangle Exterior Angle Theorem Worksheet Pdf
Triangles Worksheets


Learn the Exterior Angle Theorem of a triangle with a clear diagram, formula and easy example. The exterior angle is equal to the sum of the two opposite interior angles. Perfect for SSC CGL Maths, Geometry practice and quick revision. 📚
Interior Angle Theorem Circle
Math by Tori: Triangles Unit: Interior Angle Sum and Exterior Angle (Remote Interior Angles)
Triangle Interior Angles Worksheet Answers








An easy way to get students use to taking notes. This item includes the Interior Angles Theorem and the Exterior Angle Theorem in a short concise way with examples of each. An answer key is also provided. Supplement with your own practice problems to make a fun activity for all students