The bottom portion of a skyscraper has 6 square segments, each created by 4 triangles. The top of the skyscraper made of 4 triangles forming a rectangle and positioned to the right of the bottom portion.
The photograph above shows an example of ___________________.
a.
domino construction
c.
construction using ferroconcrete
b.
a steel frame skyscraper
d.
cantilever construction



Please select the best answer from the choices provided


A
B
C
D