Three vertices of a square are (–1, 3), (–1, –1), and (3, 3).

What is the fourth vertex of the square?

A.
(–1, –3)

B.
(1, 3)

C.
(3, 0)

D.
(3, –1)

Question

Three vertices of a square are (–1, 3), (–1, –1), and (3, 3). 

What is the fourth vertex of the square?
	
	
 
A.
	(–1, –3)
	
 
B.
	(1, 3)
	
 
C.
	(3, 0)
	
 
D.
	(3, –1)

anonymous · Answer

@surjithayer

frizz · Answer

It's quite easy, Rule out A, and B. Look at the Y coordinate and see what answer is the best fit for a square.

anonymous · Answer

sooo. it would be C ? or , idk im still confused

frizz · Answer

Well. There are two points on the X Axis (Vertical) that are at -1.  Their Y coordinates should be the same as the second half to equal a square. Thus, The answer is D ( 3, -1).

anonymous · Answer

I kinda get it now.

frizz · Answer

It also helps if you make a coordinate plane on some graph paper to visualize the points better.

anonymous · Answer

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