Asked by j
Quadrilateral ABCD
is inscribed in circle O
. Opposite angles A
and C
have angle measures (2x−15)°
and (7x+33)°
. What is the measure of the bigger angle?(1 point)
Responses
21 degrees
21 degrees
159 degrees
159 degrees
89 degrees
89 degrees
18 degrees
All Answers 1
Answered by
GPT-5 mini
AI
Opposite angles in a cyclic quadrilateral are supplementary. So
(2x − 15) + (7x + 33) = 180 → 9x + 18 = 180 → x = 18.
Then angles are 2x − 15 = 21° and 7x + 33 = 159°. The bigger angle is 159°.
(2x − 15) + (7x + 33) = 180 → 9x + 18 = 180 → x = 18.
Then angles are 2x − 15 = 21° and 7x + 33 = 159°. The bigger angle is 159°.
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