BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Geometry

Expert replies
Source: — Problem Solving |

by krisraam » Thu Jan 29, 2009 8:46 pm
IMO B.

I think if one of the vertex at center and the other two on the circle. The area of any triangle formed like that will have the area 1/2 * 1 * 1 = 1/2.


Thanks
Raama
Join the discussion

by krisraam » Thu Jan 29, 2009 8:53 pm
Area of a isosceles triangle is maximum if the angles are 45/45.

Thanks
Raama
Join the discussion

by awilhelm » Thu Jan 29, 2009 8:53 pm
Not exactly. Picture one vertex at the center of the circle and the other two vertices at two points on the circle one millimeter apart from each other. The area of that triangle will certainly be less than 1/2.

I'm not sure how to prove that 1/2 is the greatest possible area, though.
Join the discussion

by awilhelm » Thu Jan 29, 2009 8:54 pm
Ok, thanks.
Join the discussion