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Is π΄π΅πΆπ· a cyclic quadrilateral?
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In any cyclic quadrilateral, we know that the opposite angles sum to 180 degrees.
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As angles π΄ and πΆ are opposite, this would mean that angle π΄ plus angle πΆ must be equal to 180 degrees.
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79 degrees plus 62 degrees is equal to 141 degrees.
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This means that angle π΄ plus angle πΆ is not equal to 180 degrees.
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We can therefore conclude that the answer is no, π΄π΅πΆπ· is not a cyclic quadrilateral, as the sum of angles π΄ and πΆ is not 180 degrees.