To calculate the Vertical Angles:
\[ A = C, \quad B = D, \quad A = \left| B - 180 \right| \]
Where:
Vertical angles are two opposite angles created by intersecting lines. In the diagram above, \(A\) and \(C\) are vertical angles, and \(B\) and \(D\) are vertical angles. Vertical angles are always equal to one another (\(A = C\)).
Let's assume the following value:
Step 1: Use the formula:
\[ A = \left| 120 - 180 \right| = 60 \]
So, Angle A = 60 degrees, Angle C = 60 degrees, and Angle D = 120 degrees.
Let's assume the following value:
Step 1: Use the formula:
\[ A = \left| 45 - 180 \right| = 135 \]
So, Angle A = 135 degrees, Angle C = 135 degrees, and Angle D = 45 degrees.