week 7 Flashcards
1
Q
Inverse function
A
if f(x) = y, then inverse f of y equals x. It is the same as reflecting x about the line
2
Q
Polyhedra
A
shape such that each of its faces is a polygon and each edge is connected to 2 faces. points between edges are vertices
3
Q
euler’s formula
A
V-e+f =2
4
Q
Convex polyhedra
A
A polyhedron is convex if a line between any 2 points on the thing is contained within the thing
5
Q
plane graph
A
figure with points connected by edges v - e + f = 1 this implies eulers formula with window thing and one less face
6
Q
plane graph identitiy vague proof
A
on an n+1 edge graph, we can remove an edge and get to pn using it. we can do this in 2 ways, by removing an edge or a vertex.
7
Q
regularity
A
all sides are equal length and all internal angles are equal
