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Geometry 14 Online
OpenStudy (lifeisadangerousgame):

Could someone help me with this Geometry question please?

OpenStudy (lifeisadangerousgame):

OpenStudy (mathstudent55):

m<PJK = m<DJB bec of vertical angles. Substitute the expressions with x and solve for x. Then use x to get the measure of angle PJK Then m<PJK + m<KJD = 180

OpenStudy (lifeisadangerousgame):

Could you explain it a little more? I don't really understand..

OpenStudy (mathstudent55):

|dw:1359930331078:dw|

OpenStudy (mathstudent55):

The two angles I marked are called vertical angles. Vertical angles are congruent. That means they have the same measure. |dw:1359930401555:dw|

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