相交线练习与复内容提炼.pdfVIP

相交线练习

1.如图，直线EF与AB相交于点G，与CD相交于点H，则∠AGH的对顶角是；∠

AGF与是对顶角；∠AGH与是邻补角；∠GHD的邻补角是.

2.两个角互为邻补角，它们的平分线所成的角是度.

3.若∠1与∠2是对顶角，∠3与∠2互补，且知∠3=60°，那么∠1=.

4.如图，OA⊥OB，∠1：∠2=2：1，则∠1=，∠2=.

5.如图，OB⊥OA，直线CD过点O，若∠AOC=25°，则∠BOC=.

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6.如图，直线a,b，c两两相交，∠1=60°，∠2=∠4，则∠3=，∠5=.

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7.如图，BC⊥AC，AC=6，BC=8，AB=10，则点B到AC的距离是，点A到BC的

intersectinglinesexercise

1.Asshowninthefigure,straightlineEFintersectsABatpointG,andintersectsCDatpointH,thenthesubtended

vertexangleof∠AGHis;∠AGFandaresubtendedvertexang;∠AGHandareadjacentsupplementaryang;the

adjacentsupplementaryangleof∠GHDis.

2.Twoangarecomplementaryangtoeachother,andtheangleformedbytheirbisectorsis

degrees.3.If∠1and∠2areoppositevertexang,∠3and∠2arecomplementary,andwe

know∠3=60°,then∠1.4.Asshowninthefigure,O