Amy is cutting a triangle shaped baseball pennant banner out of felt. She starts by cutting a base 6 inches long and two angles that each measures 75°. What will the third angle measure?
Since the sum of angles in a triangle is always 180°, we can find the measure of the third angle by subtracting the sum of the two known angles (75° + 75° = 150°) from 180°.
180° - 150° = 30°
Therefore, the third angle in the triangle measures 30°.