AB||DC and AD||BC. if angle DAB=75°, find the measures of a, b and c
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Step-by-step explanation:
Opposite angles of parallelogram are equal.
∠DAB=∠BCD=75
o
and ∠DBC=60
o
∠BDC+∠DBC+∠BCD=180
o
∠BDC=180
o
−∠DBC−∠BCD=180
o
−75
o
−60
o
=45
o
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