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 < -

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

I’m not good at math can i have ? ?

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.