Question

ABC is an equilateral triangle , find angel a ? ​

Answer 1

angle a = 60°

Because all angle of triangle are 60°

Answer 2

Answer:

this is a correct answer

Step-by-step explanation:

In△ABCisequilateralTriangle

⇒∠A=∠B=∠C=60(Angles ofequialateraltriangleareequalto60

SinceABCDisacyclicquadilateral

∠BAC+∠BEC=180(Opposite angles ofcyclic quadilateral are supplementary)

∠BAC=60

⇒∠BEC=180−60=120In△ABCisequilateralTriangle

⇒∠A=∠B=∠C=60(Anglesofequialateraltriangleareequalto60

SinceABCDisacyclicquadilateral

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