In this article, we space going to learn **what vertical angles are** and **how to calculate them**. Prior to we begin, let’s very first familiarize ourselves with the following concepts about lines.

You are watching: A pair of opposite congruent angles formed by intersecting lines

## What room intersecting and parallel lines?

**Intersecting lines** are straight lines that meet or the cross each other at a particular point. The figure listed below shows the illustration the intersecting lines.

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Solution

1400 + z = 1800

z = 1800 – 1400

z = 400

But (x + y) + z = 1800

(x + y) + 400 = 1800

x + y = 1400

900 + y = 1400

y = 500

*Example 4*

If 1000 and also (3x + 7) ° room vertical angles, find the value of x.

Solution

Vertical angles space equal, therefore;

(3x + 7)0 = 100 0

3x = 100 – 7

3x = 93

x = 310

Hence, the worth of x is 31 degrees.

**Applications the Vertical angle (h3)**

Vertical angles have numerous applications the we check out or suffer in our day-to-day lives.

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*Mumbo Jumbo*,

*Flamingo Land’s*) is 112 degrees.At an airshow, we experience two vapor trails that crosses each other and also make upright angles.Railroad crossing indications (X) put on the roads for safety of vehicles.A kite, where two wooden sticks crosses and hold the kite.The dartboard has actually 10 bag of vertical angles, where the bull’s eye is a digital vertex.