QUESTION IMAGE
Question
if ( mangle a = 70^{circ}), then find ( mangle abe) (hint three triangles in the diagram are congruent.)
a ( 40^{circ})
b ( 120^{circ})
c ( 70^{circ})
d ( 140^{circ})
Step1: Identificar triángulos congruentes
Como se dice que los triángulos son congruentes, \(AB = BE\).
Step2: Calcular el ángulo en el triángulo isósceles
En el triángulo \(ABE\), como \(AB = BE\), \(\angle BAE=\angle BEA = 70^{\circ}\). Usando la suma de ángulos en un triángulo (\(180^{\circ}\)), \(\angle ABE=180^{\circ}- 70^{\circ}-70^{\circ}=40^{\circ}\)
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A. \(40^{\circ}\)