The base of a pyramid has n sides. write an expression for the number of vertices of the pyramid

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

i believe it's a.

i'm not sure on this one, most likely correct.