IXL | Transversals: name angle pairs | 8th grade math

or

BD
and
EG
are
parallel
lines.

A

B

C

D

E

F

G

H

Which angles are supplementary angles?

DCA and EFH

DCA and GFC

DCA and DCF

DCA and BCF

ref_doc_title.

or

Learn with an example

question

TV
and
WY
are
parallel
lines.

S

T

U

V

W

X

Y

Z

Which angles are vertical angles?

VUS and YXU

VUS and TUS

VUS and WXU

VUS and TUX

key idea

Two angles are vertical angles if they are formed by intersecting lines and are not adjacent.

A

B

C

D

E

AEB and DEC are vertical angles.

solution

First find VUS.

S

T

U

V

W

X

Y

Z

Check each pair of angles.

VUS and YXU are not vertical angles. They are not formed by the same pair of intersecting lines.

S

T

U

V

W

X

Y

Z

VUS and TUS are not vertical angles. They are adjacent.

S

T

U

V

W

X

Y

Z

VUS and WXU are not vertical angles. They are not formed by the same pair of intersecting lines.

S

T

U

V

W

X

Y

Z

VUS and TUX are vertical angles.

They
are
formed
by
the
intersecting
lines
SZ
and
TV
and
they
are
not
adjacent.

S

T

U

V

W

X

Y

Z

Looking for more? Try these:

Lesson: Vertical angles

Lesson: Adjacent angles

Lesson: Transversals of parallel lines

or

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Teacher tools

Work it out

Not feeling ready yet? These can help:

P.1Identify complementary, supplementary, vertical, adjacent, and congruent angles

Lesson: Vertical angles

Lesson: Adjacent angles

Lesson: Transversals of parallel lines