Usman458 Usman458

03-02-2019
Mathematics

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question 8 circle theorems PLEASE

question 8 circle theorems PLEASE class=

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mathecoach mathecoach

03-02-2019

Answer:

Opposite angles of a cyclic quadrilateral add to 180°

Angel CBA and angle ADC adds up to 180°.

CBA + ADC = 180

CBA = 180 - ADC

x + CBA = 180

x + 180 - ADC = 180

x - ADC = 0

x = ADC

y + ADC = 180

y + x = 180

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