9
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Proving a Quadrilateral Is a Parallelogram

Question 9 • *CR CCSS Math 2 S2 [M2960OX]

Step 3: Find the slope of BC. The slope of BC is .

Answer
A
all opposite sides are parallel
B
all sides are perpendicular
C
only one pair of opposite sides is parallel
D
only one pair of sides has reciprocals
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