Prove: quadrilateral abcd is a parallelogram.
reason
proof:
statement
1. a...
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Mathematics, 28.11.2019 02:31 KindaSmartPersonn
Prove: quadrilateral abcd is a parallelogram.
reason
proof:
statement
1. ac and bd bisect each other.
2. ae = ec
be= ed
3. m_aeb = m_ced
4. aabe acde
given
definition of bisection
sas criterion
5. lacd xl cab
corresponding angles of congruent
i triangles are congruent.
what is the reason for step 3 of this proof?
a. alternate interior angles theorem
b. corresponding angles in congruent triangles are congruent.
c. for parallel lines cut by a transversal, corresponding angles are congruent.
d. vertical angles theorem
e. sas criterion for congruence
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