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Mathematics 17 Online
OpenStudy (anonymous):

Given: ABCD is a parallelogram. A = x + 30°; and D = 2x + 60°. Find the angle measures.

OpenStudy (anonymous):

OpenStudy (anonymous):

because ABCD is a parallelogram,A+D= 180°;

OpenStudy (theviper):

x+30=2x+60 {opposite angles}

OpenStudy (anonymous):

ok, but i need to find x

OpenStudy (anonymous):

A and D have both x

OpenStudy (anonymous):

does x =90?

OpenStudy (anonymous):

A+D=A+D= 180°; then use A = x + 30°; and D = 2x + 60°

OpenStudy (anonymous):

yes, that comes out to 2x+60+4x+120=180

OpenStudy (anonymous):

6x=0

OpenStudy (anonymous):

A+D=180,

OpenStudy (anonymous):

I just wrote A+D=A+D

OpenStudy (anonymous):

oh, so it would be x+30+2x+60=180

OpenStudy (anonymous):

3x=90

OpenStudy (anonymous):

Good job

OpenStudy (anonymous):

x=30

OpenStudy (theviper):

@ipacpc deserve a medal ;)

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