$#\angle A \cong \angle C$#

$#m\angle1 + m\angle2 = m\angle A $#

$#\overline{AB} \parallel \overline{DC}$#

$#m\angle D + m\angle 1 + m\angle 3 = 180^{\circ}$#

$#\triangle ABC \cong \triangle DEF$#

$#\stackrel\frown{AB} = \stackrel\frown{DE}$#

$#\stackrel\frown{ABC} = \stackrel\frown{DEF}$#

$#\bigodot C \cong \bigodot D$#

$#\overline{AB} \perp \overline{DC}$#