Triangle sum and exterior angle theorem worksheet with six problems to find the value of x.
Worksheet titled "Triangle Sum and Exterior Angle Theorem" with six problems involving finding the value of x in triangles, including angles labeled 58°, 47°, 96°, 21°, 31°, 21°, 34°, 100°, 51°, 60°, and expressions like (3x-1)° and (2x+3)°.