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20 Feb 2012, 10:10
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
88% (00:39) correct
12%
(00:34)
wrong
based on 77
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In the Triangle ABC has angles a, b c at vertex A B C respectively. Is the Triangle ABC isosceles
(1) a = b
(2) a = 30
(1) a = b
(2) a = 30
20 Feb 2012, 10:48
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1. a=b is sufficient to answer question as two sides are equal triangle will be isoceles triangle
2. a= 30 is not sufficient because b or c can be 30 degree or any other angle.
2. a= 30 is not sufficient because b or c can be 30 degree or any other angle.
20 Feb 2012, 10:53
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hi
but from 1 we cannot know what c is it could be a=b=c which means the triangle is equilateral.
Is an equilateral triangle also an isosceles triangle ?
but from 1 we cannot know what c is it could be a=b=c which means the triangle is equilateral.
Is an equilateral triangle also an isosceles triangle ?
