GEOMETRY HELP! 1. Prove parallel lines have the same slope. Use lines r and s. Line s is a vertical translation of line r.
1 answer:
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☆ given that ,
ABCD is a parallelogram
☆ we know that ,
opposite angles of a parallelogram are equal.
Therefore ,
therefore , ∠B = 3x = 3 ( 26° ) = 78°
thus option ( A ) is correct ~
hope helpful~