Ceq of 3 capacitors in a triangle

[pyroknife]

I'm a little confused about this problem. I attached the pic. The solution manual states " capacitors C1 and C3 are in
series with each other and in parallel with capacitor C2."

I don't understand why it has to be C1 and C3 in series which is parallel with C2.

Can't it also be C2&C3 in series and parallel with C1

 

[SammyS]

Which two of the vertices, a, b, c, are assumed to be the terminals?

Please state the whole problem as it was given to you.

 

[pyroknife]

Oh they said "find an expression for the equivalent capacitance between points a and c in terms of the 3 capacitance values." But they didn't say they were the terminals tho, unless that statement implies it.

 

[phinds]

Oh they said "find an expression for the equivalent capacitance between points a and c in terms of the 3 capacitance values." But they didn't say they were the terminals tho, unless that statement implies it.

Yes, the statement implies it.