find x and y in the given figures. chapter name triangle congruency
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ABEF trapezium angle B=70° then
angle BEF=110° then x=110°
angle BEF+angle FEC=180°
angleFEC=180°-110°=70°
angle FCE+angleFCD=180° (linear pair)
angle FCE=180°-128 =52°
In triangleFCE
angleFCE= 58°
angle BEF=110° then x=110°
angle BEF+angle FEC=180°
angleFEC=180°-110°=70°
angle FCE+angleFCD=180° (linear pair)
angle FCE=180°-128 =52°
In triangleFCE
angleFCE= 58°
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