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quadrilateral ABCD is inscribed in circle O as shown below. which of the following would be used to find the measure of angle 3

quadrilateral ABCD is inscribed in circle O as shown below. which of the following would be used to find the measure of angle 3 class=

Answer :

Answer:

180° -m∠1

Explanation:

• Quadrilateral ABCD is a cyclic quadrilateral.

,

• The opposite angles of a cyclic quadrilateral add up to 180 degrees.

Therefore:

[tex]\begin{gathered} m\angle3+m\angle1=180\degree \\ \implies m\angle3=180\degree-m\angle1 \end{gathered}[/tex]

Therefore, the second option would be used to find the measure of angle 3.

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