Vertical Angles

Definition of Vertical Angles

• When two lines intersect, two pairs of opposite angles are formed.

These angles are called vertical angles. Vertical angles are congruent.

                                        

Examples of Vertical Angles

• In the figure shown, are vertical angles.

  

                                   

Solved Example on Vertical Angles

Identify the number of pairs of vertical angles in the figure shown.  

 

Choices:

A.  2

B.  8

C.  4

D.  3

Correct Answer: C

Solution:

Step 1: When two lines intersect, two pairs of opposite angles are formed.

These angles are called vertical angles.

Step 2: In the figure shown,

are vertical angles.

Step 3: There are 4 pairs of vertical angles.

                       

Related Terms for Vertical Angles

• Angle
• Line

                           

Additional Links for Vertical Angles

• Click here for samples
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