## About Vertical Angle Calculator (Formula)

A vertical angle is an angle formed by two intersecting lines. The two lines are said to be vertically opposite to each other when they form a pair of vertical angles. The vertical angle formula is used to calculate the measure of the angles in a pair of vertical angles, given the measure of one of the angles.

The formula for a vertical angle is: **A = C, B = D, A = abs (B-180)**

Where A and B are the measures of the two angles in a pair of vertical angles, and C and D are the measures of the other two angles in the pair. The formula states that the measure of the first angle in the pair is equal to the measure of the second angle, and the measure of the third angle is equal to the measure of the fourth angle.

It’s important to note that the angle value should be in degree and the angle value should be between 0 to 180 degree.

The vertical angle theorem is used when the measures of the angles of one pair of vertical angles are known and the measures of the other pair of angles are to be determined.

In the formula, angle A is equal to angle C and angle B is equal to angle D, which means that the measures of the two angles in a pair of vertical angles are always equal to each other. Additionally, angle A can be calculated by subtracting angle B from 180 degrees, which is represented by the absolute value function (abs) in the formula.

This vertical angle formula can be useful in geometry and trigonometry problems, as well as in real-world applications such as surveying and engineering.