Calculate the Value of the Missing Angle

GAME INFO
Calculate the Value of the Missing Angle is an interactive online math activity, in the form of a quiz with multiple questions to choose the correct one. Look at the lines and triangles and use math and geometry to solve the puzzle. How much is the missing angle worth? Use the concept of the plane angle (180 degrees), the concept of the complete angle (360 degrees), and the law, according to Euclid's theorem, by which the angles of a triangle add up to 180º. In addition, the angles formed by parallel lines are equal.