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.
Picture Interior Angles of Triangle
Triangles and Quadrilaterals Worksheets - Math Monks
110 Geo témájú ötlet oktatás, felsős matek, tanítás
Similar Triangles Worksheets - Math Monks
Classifying Triangles Worksheets - Math Monks
Estimating Angles Worksheet Free math worksheets, Angles
Area of a Triangle Worksheets - Math Monks
Angles in a Triangle Worksheets - Math Monks
Trigonometric Ratios Worksheets - Math Monks - Worksheets Library