In the given fig. the arms of two angle are parallel.
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Answer:
Angle DGC = 40°(corresponding angles)
BECAUSE AB parallel to DG and BC intersecting them
angle DEF = 40° (CORRESPONDING ANGLES)
BECAUSE BC PARALLEL TO EF and DE IS INTERSECTING THEM
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Step-by-step explanation:
angle dgc=40 degree(angles of parralel lines)
angle bgd+angle dgc=180
angle bgd =180-40
angle bgd =140
angle def=angle bgd
angle def=140