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Web Results

en.wikipedia.org/wiki/Transversal_(geometry)

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

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

An Isosceles Triangle has two

www.mathsisfun.com/geometry/parallel-lines.html

Parallel Lines, and Pairs of

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

Jan 24, 2013

www.math10.com/en/geometry/angles/angles.html

When two parallel lines are cut by a third line, the third line is

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

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

They are defined as a pair of nonadjacent

More Info

www.mathplanet.com

Vertical

www.regentsprep.org

When lines intersect,

www.mathsisfun.com