Find Angle α in Geometric Diagram with 120° Reference

Question

According to the drawing

What is the size of the angle? α \alpha ?

120

Video Solution

Solution Steps

00:00 Determine angle A
00:05 According to the given data the lines are parallel
00:12 Corresponding angles between parallel lines are equal
00:21 Here is the solution

Step-by-Step Solution

Given that the angle
α \alpha is a corresponding angle to the angle 120 and is also equal to it, thereforeα=120 \alpha=120

Answer

120 120