Check my answers? 15 points to whomever answers.
1. how many edges does a convex polyhedron have if it has 12 vertices and 20 faces?
38
34
30 < -
28

2. what is the euler characteristic of a polyhedron that has 12 vertices, 12 faces and 30 edges?
-6
2 < -
20
30
3. how many points are on a taxicab circle with radius 3?
12 < -
10
16
18
4. what is the taxidistance between a(1,5) and b(6,2)?
14
2
1
8 < -

5. which shapes are topologically equivalent to choice 2 (see image below)?
1 and 4 only
1,2 and 4
2 and 4 only
none < -