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Math Help - help with geometry circle questions

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    help with geometry circle questions

    questions in attachments.
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by dgenerationx2 View Post
    questions in attachments.
    13.

    m\widehat{AB}=52^{\circ} \ \ because an inscribed angle is equal to half its intercepted arc.

    m\angle D=26^{\circ} \ \ because inscribed angles that intercept the same arc are equal in measure.

    14.

    m\angle B=90^{\circ} \ \ because an inscribed angle in a semicircle always measures 90 degrees. It subtends 180 degrees and is equal to half of it. You don't have 90 degrees as a choice. Somebody messed up.

    m\widehat{AD}=180-70=110^{\circ} \ \ because arcs CD and AD make up a semicircle (180 degrees).
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