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Geometry 21 Online
OpenStudy (anonymous):

Each list shows the interior angle measures of a quadrilateral. Which set of measures describes a quadrilateral that cannot be inscribed in a circle? 69°, 103°, 111°, 77° 52°, 64°, 128°, 116° 42°, 64°, 118°, 136° 100°, 72°, 80°, 108° I need help please ! ASAP

OpenStudy (anonymous):

3rd option 42°, 64°, 118°, 136° cannot be inscribed in a circle because For the quadrilateral of the type, this conjecture should be followed: AngleA + AngleC = 180 AngleB + AngleD = 180 NB: Angle A&C and Angle B&D are opposite

OpenStudy (anonymous):

I got it :) thank you so much.

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