Prove Parallelogram

•  $\overline{BR}$  and  $\overline{RK}$  

•   $\overline{AB}$  and  $\overline{KA}$  

• Symmetric Property

• CPCTC

• Reflexive Property

• SSS

• ASA

• SAS

• AAS

• SSS

Fill in the Reason #3.

• Alternate interior angles are congruent.

• Vertical angles are congruent.

• Reflexive Property

Fill in the Statement#4.

Fill in the Reason#4.

• Alternate interior angles are congruent.

• Vertical angles are congruent.

• Reflexive Property

Fill in the Statement#5.

Fill in the Reason#6.

• Opposite sides of a parallelogram are congruent.

• definition of parallelogram

• Prove

• CPCTC