hiiamsuperverylong
21.07.2019 •
Mathematics
Given that ab is a diameter of circle o, find the missing angle and arc measures. itembank: move to bottom 116°154°26°32°64°
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Ответ:
M arc CB=64°,M<AOC= 116° ,M arc AD=26°,M arc DFB=154°,M<CDB=32°.
Step-by-step explanation:
Measure of central angle is equal to the measure of intercepted arc .Given <COB= 64°.Hence M arc CB=64°.
<AOC= 180-64= 116°.( Angles made on a straight line is supplementary)
Measure of intercepted arc is twice the angle made on the circumference.
It is given <ABD= 13 °.Hence intercepted arc AD =2x13=26°.
Marc DFB=180-26=154°.Measure of arc of a semicircle is 180°.
M< CDB=64÷2=32°( angle made on circumference is half the angle made at the centre.)
Ответ:
answer: Your age
Step-by-step explanation: