1 Answer

Mario Visic · Answer 1 · 2023-11-30T03:45:17+0000

ANSWER

A) 70º

Step-by-step explanation

In quadrilaterals inscribed in a circle, opposite angles are supplementary - their measures add up 180º. Therefore:

$\begin{gathered} m\angle DAB+m\angle DCB=180º \\ 110º+m\angle DCB=180º \\ m\angle DCB=180º-110º \\ m\angle DCB=70º \end{gathered}$

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