In a triangle, DEF DE = EF, EH is the median, the angle DEH = 25 °. Find the angle DEF.

Let DE = EF, EH – median, <DEH = 25 °. Find <DEF. According to the condition, the triangle is isosceles and ЕН is the bisector, <DEF = 2 * <DEH = 2 * 25 ° = 50 °.



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