please help me..
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Step-by-step explanation:
OE bisects angle AOD
OC bisects angle DOB
AOE = EOD
DOC = COB
EOD + DOC = 90 degree
which implies that
AOE + COB = 90 degree
(as AOE=EOD
BOC=COD)
EOD + DOC + AOE + COB
90 degree + 90 degree
=180 degree
therefore AB is a line
( as the total measure of the angles is 180 degrees )
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