Mathematics, 20.09.2020 03:01 alex7078

Proving the Parallelogram Side Theorem Try it
Given: ABCD is a parallelogram.
Prove: ABCD and BC DA
Angles Segments Trangles Statements Reasons
ZBAC
ZBCA
ZDAC
ZDCA
B
с
Reasons
6. def. of alt. interior angles
Statements
✓ 6. ZDCA and ZBAC
are alt. interior angles
7. ZBCA ZDAC
✓ 8. ZBAC - ZDCA
9. ACAC
✓ 10. AABC CDA
11. ABCD
12. BC DA
А
D
7. alterate interior angles theorem
8. alternate interior angles theorem
9. reflexive property
10. ASA
11. CPCTC
12. CPCTC
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Proving the Parallelogram Side Theorem Try it
Given: ABCD is a parallelogram.
Prove: AB...