Find Angle α in Geometric Diagram with 120° Reference

According to the drawing

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

120

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Step-by-step video solution

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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 written solution

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1

Understand the problem

According to the drawing

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

120

2

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

3

Final Answer

120 120

Practice Quiz

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If one of two corresponding angles is a right angle, then the other angle will also be a right angle.

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