In this figure counting the squares and we get the 27 squares.

undefined

The triangle 6 shown in figure and another is ADB,ACB, BDC,ADC, so that total number of triangle is 10

in the figure the 8 triangle is shown easily and another is COD , DOB, BOA, AOC, ACD, BDC,ABC, ABD so that total no. of triangle is 8+8=16

The figure shown the no. of triangle is in the diagram so that total no. of triangle is 8+8+8+4=28

undefined

The simplest triangle is shown in figure is 12 and another is IBO, BDO, DGO, GIO, ABO,CBD, DEO, IBD,BDG, DGI, GIB, ACO and COE and ACE is the total no of traingle are 12+14=26