Source: Official Guide for GMAT Review 2016 Problem Solving; #94

1

In the figure above, triangle ABC is

In the figure above, triangle ABC is equilateral, and point P is equidistant from vertices A, B, and C. If triangle ABC is rotated clockwise about point P, what is the minimum number of degrees the triangle must be rotated so that point B will be in position where point A is now?

2 Explanations

1

Parijat Sinha

I found angle BPC as 120 degrees (double of 60 degrees, it being an equilateral triangle) and added another 120 degrees from angle CPA) to arrive at 240 degrees.

Your thoughts pls. Thanks.

May 31, 2016 • Comment

Cydney Seigerman, Magoosh Tutor

Nice work determining the measures of angles BPC and CPA. Both have an angle measure of 120 degrees. We have to rotate the triangle clockwise the measure of those two angles, or 240 degrees, so that B is in the original position of A. Good job :D

Jun 1, 2016 • Reply

1

Gravatar Mike McGarry, Magoosh Tutor

Aug 14, 2015 • Comment

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Section 5.3 Problem Solving

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