Can we move the points? Geometry

[colecitrenbaum]

In this question, it does not say that the inscribed triangle and pentagon share a vertex. In the case that they do not share a vertex, the arc distance AB can obviously be more or less than \frac{2\pi}{3}.

Thoughts? I feel in these QC questions it’s standard that unless they tell us something explicitly we should not assume it. Eg, oftentimes a line that looks like it goes through the center of the circle we should not assume actually does.

[Leaderboard]

@colecitrenbaum

inscribed triangle and pentagon share a vertex

I think that’s clear enough from the diagram.

@colecitrenbaum

I feel in these QC questions it’s standard that unless they tell us something explicitly we should not assume it

There are some “common sense” things that you can assume. See page 14 of https://www.ets.org/pdfs/gre/gre-math-conventions-18-point.pdf for an example.

[HoldMyBeer]

I too had a hard time figuring out what we can assume in GRE before reading math conventions