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In mathematics, vertical angles are always congruent. Vertical angles are the angles positioned opposite from each other when two lines intersect. They are called vertical because ...

vertical angle
NOUN [GEOMETRY]
1.
one of two opposite and equal angles formed by the intersection of two lines.
Source: Dictionary.com

## Vertical Angles - Math is Fun

www.mathsisfun.com/geometry/vertical-angles.html

Vertical Angles are the angles opposite each other when two lines cross. " Vertical" in this case ... The interesting thing here is that vertical angles are equal:  ...

## Definition of Vertical Angles - Math is Fun

www.mathsisfun.com/definitions/vertical-angles.html

Vertical Angles are the angles opposite each other when two lines cross. They are always equal. In this example a° and b° are vertical angles. Try moving the ...

One thing to consider in this equation is that in cases where the meniscus is convex (i.e. the contact angle is greater than 90 degrees), the cosine component of this equation will be negative which means that the liquid-solid surface tension will be positive. If, on t... More »
By Andrew Zimmerman Jones, About.com Guide

## Vertical angles | Relationships between angles | Khan Academy

Practice vertical angles with Khan Academy's free online exercises.

## Introduction to vertical angles | Relationships between angles | Khan ...

By using our knowledge of supplementary, adjacent, and vertical angles, we can solve problems involving the intersection of two lines. Including this one!

## Vertical Angles definition - Math Open Reference

www.mathopenref.com/anglesvertical.html

Definition and properties of vertical (or opposite) angles.

## Vertical Angles: Definition, illustrated examples, and an interactive ...

www.mathwarehouse.com/geometry/angle/vertical-angles.php

Vertical angles explained with examples , pictures, an interactive program and a practice quiz.

## Vertical Angles in Geometry: Definition & Examples | Study.com

After completing this lesson, you will be able to identify and draw vertical angles. You will also be able to state the properties of vertical...

vertical angle | Define vertical angle at Dictionary.com
dictionary.reference.com/browse/vertical angle
The world's most popular free online dictionary with definitions, spell check, word origins, example sentences, audio pronunciations, Word of the Day and more!
Popular Q&A
Q: How to Solve Vertical Angles.
A: Instructions. Determine the expressions of two vertical angles. For the following example, use 3x + 30 as the expression of one vertical angle and 2x + 60 as th... Read More »
Source: www.ehow.com
Q: What Are Vertical Angles?
A: Adjacent Angles. These angles have a common vertex and a common side. The sum of two angles doesn't necessarily have to be 180 degrees for them to be adjacent a... Read More »
Source: www.ehow.com
Q: What is the vertical angle theorem?
A: Given two intersecting lines, the two angles opposite each other have the same measure and are congruent. Read More »