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Web Results

en.wikipedia.org/wiki/Corresponding_angles

In geometry, a transversal is a line that passes through two lines in the same
plane at two ... cuts two parallel lines at right

www.mathopenref.com/anglesvertical.html

As can be seen from the figure above, when two lines intersect, four

www.regentsprep.org/regents/math/geometry/gp5/langles.htm

An

math.stackexchange.com/questions/286114/explain-why-vertical-angles-must-be-congruent

Jan 24, 2013

www.dummies.com/how-to/content/proving-vertical-angles-are-congruent.html

... to make an X,

study.com/academy/lesson/types-of-angles-vertical-corresponding-alternate-interior-others.html

They are defined as a pair of nonadjacent

www.coolmath.com/reference/triangles-types

Since the sum of the

www.wyzant.com/resources/lessons/math/geometry/lines_and_angles/pairs_of_angles

Another special pair of

www.math.com/school/subject3/lessons/S3U1L5DP.html

Vertical

www.khanacademy.org/math/geometry-home/geometry-angles/geometry-vert-comp-supp/v/proof-vertical-angles-are-equal

Proving that vertical

More Info

www.mathplanet.com

Vertical

www.mathsisfun.com

www.mathsisfun.com

Vertically Opposite