ABC is an equilateral triangle , find angel a ?
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angle a = 60°
Because all angle of triangle are 60°
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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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