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In the figure above, is angle ABC a right angle?

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In the figure above, is angle ABC a right angle?  [#permalink]

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New post 07 Feb 2018, 05:59
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

65% (00:27) correct 35% (00:40) wrong based on 29 sessions

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In the figure above, is angle ABC a right angle?

(1) AC is the diameter of the circle.

(2) AB = BC

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Re: In the figure above, is angle ABC a right angle?  [#permalink]

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New post 07 Feb 2018, 13:43
Inscribed angles:

- In order for Angle ABC to be 90, AC must be the diameter.

(1) AC is the diameter of the circle --> SUFF --> A or D

(2) AB = BC --> Many different cases. --> INS

Answer is A
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Re: In the figure above, is angle ABC a right angle? &nbs [#permalink] 07 Feb 2018, 13:43
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In the figure above, is angle ABC a right angle?

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