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parallelogram ABCD angle B equals 5x and angle C equals 2x+12. What is the number of degrees in angle D

Respuesta :

ElaineChen
5x+2x+12=180
consecutive angle are supplementary
7x+12=180
7x=168
x=24
angle D=5x opposite angle are congruent
5x=120
Angle d=120
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