Respuesta :

annaec909

Answer:

C. DE=52

Step-by-step explanation:

Because the triangle is equilateral (all sides being equal), the half of each side is equal to the sides of the smaller triangle. Since BC=26, DE would be double.

alexrocal

Answer:

52

Step-by-step explanation:

Applying Thales' Theorem

(DE) / (2AB) =  26 / (AB)

             DE = (2AB)*26/ (AB)

             DE = 2*26

             DE = 52