IXL | Transversals of parallel lines: name angle pairs

NP
and
QS
are
parallel
lines.

Which angles are alternate exterior angles?

SRT and NOR

SRT and NOM

SRT and POM

SRT and QRO

ref_doc_title.

Learn with an example

question

KM
and
NP
are
parallel
lines.

Which angles are alternate exterior angles?

KLJ and POQ

KLJ and NOQ

KLJ and KLO

KLJ and POL

key idea

A transversal is a line that intersects two other lines.

Two angles formed by a transversal crossing two lines are alternate exterior angles if they are outside the two lines and are on opposite sides of the transversal, but are not adjacent.

solution

First find KLJ.

Check each pair of angles.

KLJ and POQ are alternate exterior angles. They are outside the two lines and are on opposite sides of the transversal, but are not adjacent.

KLJ and NOQ are not alternate exterior angles. They are not on opposite sides of the transversal.

KLJ and KLO are not alternate exterior angles. KLO is not outside the two lines.

KLJ and POL are not alternate exterior angles. POL is not outside the two lines.

Looking for more? Try these:

Lesson: Transversals of parallel lines

Lesson: Adjacent angles

Lesson: Vertical angles

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Teacher tools

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Not feeling ready yet? These can help:

Y.4Identify complementary, supplementary, vertical, and adjacent angles

Y.7Identify alternate interior and alternate exterior angles

Lesson: Transversals of parallel lines

Lesson: Adjacent angles

Lesson: Vertical angles

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