Üçgende Açı Sorusu

ABC üçgen

$m(\widehat{ABD}) = m(\widehat{DBC})$

$m(\widehat{BAE}) = 40^\circ$

$m(\widehat{EAC}) = 70^\circ$

Yukarıdaki verilere göre $m(\widehat{BDE}) = \alpha$ kaç derecedir?

A) 20

B) 30

C) 35

D) 40

E) 50

Soruda görsel içerik var: A geometric figure depicting triangle ABC. Point E lies on the segment BC. Segment AE is drawn. Point D lies on segment AC. Line segments BD, BE, and DE are drawn. The angles are given: angle BAE = 40 degrees, angle EAC = 70 degrees. Also, the angle ABD equals angle DBC. The objective is to find the value of angle BDE, which is labeled as alpha.