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Subject :IMO    Class : Class 7

Which of the following options is INCORRECT?


A ∠1 = ∠3
B ∠1 + ∠4 + ∠5 = 180°
C ∠8 = ∠6
D ∠1 + ∠3 = 180°


Ans 1:

Class : Class 8

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