I need help with these three questions someone help me please what are these shapes called

The first shape is called (I don't know)

The second shape is called Icosahedron

The thrid shape is called Octahedron

Step-by-step explanation:

astronomers is your final answer! : )

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

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