Question

One of the angles formed by two intersecting lines measures 30°. What are the measures of the other 3 angles?

Answer 1

30, 150, 150

Explanation:

The angle opposite to the specified angle also measures 30 degrees by the Vertical Angles Theorem. Since the angles adjacent to, or next to, the specified angle form linear pairs with the specified angle, the adjacent angles measure 150 degrees by the Linear Pair Postulate.