(1) The waist is larger than the bottom,
a+b+c=a+2b+2 1
b-a=3
Get,a = 5; b=c=8
(2) The bottom edge is larger than the waist,
a+b+c=a+2b+2 1
a-b=3
Combine the two formulas and get a = 9;; b=c=6
2. Let the number of edges of these two positive multiple deformations be n and m respectively.
n:m= 1:2
(n-2)× 180:(m-2)× 180 = 3:8
Combine these two formulas to get.
n=5,m = 8; The corresponding sum of internal angles is 540 and 1440 respectively.