Question

in the given figure triangle ABC is an equilateral triangle and BC is produced to D such that BC is equal to CD prove that ad is perpendicular to ab​

Answer 1

Answer:

yes

Step-by-step explanation:

angle A=angle B=angle C ----- by equilateral triangle

angle BAC =60

BC=CD=AC

ACD is issoless triangle

angle ACD=180--60 = 120

120+2x =180

2x = 60

x = 30

angle A =60+30 =90

so ad perpendicular to ab