Question

please help me
If ABC is a cyclic triangle and EF parallel BC.Is BEFC is a cyclic quadrilateral and why??10 marks and brainlist sure​

Answer 1

Hey mate here is your answer.

According to the definition, In Eucledian geometry, a cyclic quadrilateral is one which is enclosed within a circle.

We have, ABC is a cyclic triangle.

EF//BC.

The quadrilateral formed, quadBEFC is enclosed in the circle.

Hence it is a cyclic quadrilateral.

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