Question from test capabilities

[m_s_a]

Homework Statement

from test capabilities
I want to know the right answer please

True Or False Questions

stereographic projection for
space R3 is the set of points (x, y, 0) and radius 1 is the circle
X2 + Y2 = 1
stereographic projection for
space R3 is the set of points (x, y, 0) and radius r is the circle
X2 + Y2 = 1
on R2 space
stereographic projection for
space R3 is the set of points (x, y, z) and radius 1 is the circle
X2 + Y2 = 1

Homework Equations

http://en.wikipedia.org/wiki/Stereographic_projection

The Attempt at a Solution

 

[Pere Callahan]

Homework Statement

from test capabilities
I want to know the right answer please

That's what we all want.

True Or False Questions

stereographic projection for
space R3 is the set of points (x, y, 0) and radius 1 is the circle
X2 + Y2 = 1
stereographic projection for
space R3 is the set of points (x, y, 0) and radius r is the circle
X2 + Y2 = 1
on R2 space
stereographic projection for
space R3 is the set of points (x, y, z) and radius 1 is the circle
X2 + Y2 = 1

Maybe you should apply more care in at least copying the question correctly. These are not sensible questions yet alone sentences. Maybe you try again asking what you don't understand and please show some effort you have put into answering these questions yourself (Linking to wikipedia is not quite enough.)