Mathematics

Problem

\triangle ABC

and

\triangle DEF

are congruent by the ASA criterion. In

\triangle ABC

AB = 5\,\text{cm}

\angle A = 50^{\circ}

and

\angle B = 60^{\circ}

. In

\triangle DEF

DE = 5\,\text{cm}

and

\angle D = 50^{\circ}

. What is the measure of

\angle E

? a)

80^{\circ}

60^{\circ}

70^{\circ}

50^{\circ}