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Mathematics 21 Online
OpenStudy (anonymous):

What is the reason for step 3 of this proof? m∠AEB = m∠CED

OpenStudy (cp9454):

complete question

OpenStudy (cp9454):

vertically opposite angles

OpenStudy (anonymous):

not my choice

OpenStudy (anonymous):

Alternate Interior Angles Theorem Corresponding angles in congruent triangles are congruent. For parallel lines cut by a transversal, corresponding angles are congruent. Vertical Angles Theorem SAS criterion for congruence

OpenStudy (cp9454):

C, vertical angle theoram

OpenStudy (anonymous):

thats d XD

OpenStudy (cp9454):

but they are vertical angles, maybe i didn't understtod ur question

OpenStudy (anonymous):

ok

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